GET https://kbin.spritesserver.nl/index.php/m/linux@lemmy.ml/t/11764/Why-btrfs-gets-huge-perf-hit-with-background-IO-work

Response
200 OK
IP
216.73.216.97
Profiled on
Token
4428c9

Security

Token

There is no security token.

Firewall

main Name
Security enabled
Stateless

Configuration

Key Value
provider security.user.provider.concrete.app_user_provider
context main
entry_point App\Security\KbinAuthenticator
user_checker App\Security\UserChecker
access_denied_handler (none)
access_denied_url (none)
authenticators 
[
  "two_factor"
  "remember_me"
  "App\Security\KbinAuthenticator"
  "App\Security\FacebookAuthenticator"
  "App\Security\GoogleAuthenticator"
  "App\Security\GithubAuthenticator"
  "App\Security\KeycloakAuthenticator"
]

Listeners

Listener Duration Response 
Symfony\Component\Security\Http\Firewall\ChannelListener {#723
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
  -logger: Monolog\Logger {#783 …}
  -httpPort: 80
  -httpsPort: 443
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\ContextListener {#706
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage {#1017 …}
  -sessionKey: "_security_main"
  -logger: Monolog\Logger {#783 …}
  -userProviders: Symfony\Component\DependencyInjection\Argument\RewindableGenerator {#705 …}
  -dispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
  -registered: false
  -trustResolver: Scheb\TwoFactorBundle\Security\Authentication\AuthenticationTrustResolver {#780 …}
  -sessionTrackerEnabler: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage::enableUsageTracking(): void {#703 …}
}
 25.87 ms (none) 
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584
  -authenticatorManager: Symfony\Component\Security\Http\Authentication\AuthenticatorManager {#595 …}
}
 0.00 ms (none) 
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582
  -twoFactorFirewallConfig: Scheb\TwoFactorBundle\Security\TwoFactor\TwoFactorFirewallConfig {#842 …}
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}
}
 0.06 ms (none) 
Symfony\Component\Security\Http\Firewall\AccessListener {#579
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -accessDecisionManager: Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager {#937 …}
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\LogoutListener {#786
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -options: [
    "csrf_parameter" => "_csrf_token"
    "csrf_token_id" => "logout"
    "logout_path" => "app_logout"
  ]
  -httpUtils: Symfony\Component\Security\Http\HttpUtils {#841 …}
  -csrfTokenManager: Symfony\Component\Security\Csrf\CsrfTokenManager {#1015 …}
  -eventDispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
}
 0.00 ms (none)

Authenticators

No authenticators have been recorded. Check previous profiles on your authentication endpoint.

Access Decision

affirmative Strategy
# Voter class
1 
"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
2 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
3 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
4 
"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
5 
"App\Security\Voter\EntryCommentVoter"
6 
"App\Security\Voter\EntryVoter"
7 
"App\Security\Voter\MagazineVoter"
8 
"App\Security\Voter\MessageThreadVoter"
9 
"App\Security\Voter\MessageVoter"
10 
"App\Security\Voter\NotificationVoter"
11 
"App\Security\Voter\OAuth2UserConsentVoter"
12 
"App\Security\Voter\PostCommentVoter"
13 
"App\Security\Voter\PostVoter"
14 
"App\Security\Voter\UserVoter"

Access decision log

# Result Attributes Object
1 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
2 DENIED moderate 
App\Entity\Entry {#2419
  +user: Proxies\__CG__\App\Entity\User {#1970 …}
  +magazine: App\Entity\Magazine {#265
    +icon: Proxies\__CG__\App\Entity\Image {#246 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729583542 {#275
      date: 2024-10-22 09:52:22.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#237 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#233 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#222 …}
    +entries: Doctrine\ORM\PersistentCollection {#180 …}
    +posts: Doctrine\ORM\PersistentCollection {#138 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#200 …}
    +bans: Doctrine\ORM\PersistentCollection {#117 …}
    +reports: Doctrine\ORM\PersistentCollection {#103 …}
    +badges: Doctrine\ORM\PersistentCollection {#81 …}
    +logs: Doctrine\ORM\PersistentCollection {#71 …}
    +awards: Doctrine\ORM\PersistentCollection {#1346 …}
    +categories: Doctrine\ORM\PersistentCollection {#1823 …}
    -id: 73
    +apId: "linux@lemmy.ml"
    +apProfileId: "https://lemmy.ml/c/linux"
    +apPublicUrl: "https://lemmy.ml/c/linux"
    +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729583596 {#269
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#271
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1943 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
  +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
  +title: "Why btrfs gets huge perf hit with background IO work?"
  +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
  +body: null
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 36
  +favouriteCount: 118
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1700047530 {#2414
    date: 2023-11-15 12:25:30.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1866 …}
  +votes: Doctrine\ORM\PersistentCollection {#1966 …}
  +reports: Doctrine\ORM\PersistentCollection {#1946 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1368 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2426 …}
  +badges: Doctrine\ORM\PersistentCollection {#2439 …}
  +children: []
  -id: 11764
  -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
  -bodyTs: null
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1699715383
  +visibility: "visible             "
  +apId: "https://lemmy.world/post/8066421"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699628983 {#1793
    date: 2023-11-10 16:09:43.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
3 DENIED edit 
App\Entity\Entry {#2419
  +user: Proxies\__CG__\App\Entity\User {#1970 …}
  +magazine: App\Entity\Magazine {#265
    +icon: Proxies\__CG__\App\Entity\Image {#246 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729583542 {#275
      date: 2024-10-22 09:52:22.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#237 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#233 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#222 …}
    +entries: Doctrine\ORM\PersistentCollection {#180 …}
    +posts: Doctrine\ORM\PersistentCollection {#138 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#200 …}
    +bans: Doctrine\ORM\PersistentCollection {#117 …}
    +reports: Doctrine\ORM\PersistentCollection {#103 …}
    +badges: Doctrine\ORM\PersistentCollection {#81 …}
    +logs: Doctrine\ORM\PersistentCollection {#71 …}
    +awards: Doctrine\ORM\PersistentCollection {#1346 …}
    +categories: Doctrine\ORM\PersistentCollection {#1823 …}
    -id: 73
    +apId: "linux@lemmy.ml"
    +apProfileId: "https://lemmy.ml/c/linux"
    +apPublicUrl: "https://lemmy.ml/c/linux"
    +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729583596 {#269
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#271
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1943 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
  +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
  +title: "Why btrfs gets huge perf hit with background IO work?"
  +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
  +body: null
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 36
  +favouriteCount: 118
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1700047530 {#2414
    date: 2023-11-15 12:25:30.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1866 …}
  +votes: Doctrine\ORM\PersistentCollection {#1966 …}
  +reports: Doctrine\ORM\PersistentCollection {#1946 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1368 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2426 …}
  +badges: Doctrine\ORM\PersistentCollection {#2439 …}
  +children: []
  -id: 11764
  -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
  -bodyTs: null
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1699715383
  +visibility: "visible             "
  +apId: "https://lemmy.world/post/8066421"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699628983 {#1793
    date: 2023-11-10 16:09:43.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
4 DENIED moderate 
App\Entity\Entry {#2419
  +user: Proxies\__CG__\App\Entity\User {#1970 …}
  +magazine: App\Entity\Magazine {#265
    +icon: Proxies\__CG__\App\Entity\Image {#246 …}
    +name: "linux@lemmy.ml"
    +title: "linux"
    +description: """
      From Wikipedia, the free encyclopedia\n
      \n
      Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
      \n
      Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
      \n
      ### Rules\n
      \n
      - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
      - No misinformation\n
      - No NSFW content\n
      - No hate speech, bigotry, etc\n
      \n
      ### Related Communities\n
      \n
      - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
      - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
      - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
      - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
      \n
      Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 1406
    +entryCommentCount: 28632
    +postCount: 6
    +postCommentCount: 214
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729583542 {#275
      date: 2024-10-22 09:52:22.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#237 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#233 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#222 …}
    +entries: Doctrine\ORM\PersistentCollection {#180 …}
    +posts: Doctrine\ORM\PersistentCollection {#138 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#200 …}
    +bans: Doctrine\ORM\PersistentCollection {#117 …}
    +reports: Doctrine\ORM\PersistentCollection {#103 …}
    +badges: Doctrine\ORM\PersistentCollection {#81 …}
    +logs: Doctrine\ORM\PersistentCollection {#71 …}
    +awards: Doctrine\ORM\PersistentCollection {#1346 …}
    +categories: Doctrine\ORM\PersistentCollection {#1823 …}
    -id: 73
    +apId: "linux@lemmy.ml"
    +apProfileId: "https://lemmy.ml/c/linux"
    +apPublicUrl: "https://lemmy.ml/c/linux"
    +apFollowersUrl: "https://lemmy.ml/c/linux/followers"
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "linux"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729583596 {#269
      date: 2024-10-22 09:53:16.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1698929468 {#271
      date: 2023-11-02 13:51:08.0 +01:00
    }
  }
  +image: Proxies\__CG__\App\Entity\Image {#1943 …}
  +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
  +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
  +title: "Why btrfs gets huge perf hit with background IO work?"
  +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
  +body: null
  +type: "image"
  +lang: "en"
  +isOc: false
  +hasEmbed: true
  +commentCount: 36
  +favouriteCount: 118
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1700047530 {#2414
    date: 2023-11-15 12:25:30.0 +01:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1866 …}
  +votes: Doctrine\ORM\PersistentCollection {#1966 …}
  +reports: Doctrine\ORM\PersistentCollection {#1946 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1368 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2426 …}
  +badges: Doctrine\ORM\PersistentCollection {#2439 …}
  +children: []
  -id: 11764
  -titleTs: "'background':8 'btrfs':2 'get':3 'hit':6 'huge':4 'io':9 'perf':5 'work':10"
  -bodyTs: null
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1699715383
  +visibility: "visible             "
  +apId: "https://lemmy.world/post/8066421"
  +editedAt: null
  +createdAt: DateTimeImmutable @1699628983 {#1793
    date: 2023-11-10 16:09:43.0 +01:00
  }
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
5 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
6 DENIED moderate 
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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    Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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    I tried a cold start of xterm on my older thinkpad with an NVMe drive at ~0.3s.\n
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Show voter details
7 DENIED edit 
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        - No misinformation\n
        - No NSFW content\n
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        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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    I tried a cold start of xterm on my older thinkpad with an NVMe drive at ~0.3s.\n
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Show voter details
8 DENIED moderate 
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        - No NSFW content\n
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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9 DENIED ROLE_USER 
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      Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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11 DENIED edit 
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      Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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      I tried a cold start of xterm on my older thinkpad with an NVMe drive at ~0.3s.\n
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12 DENIED moderate 
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
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        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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Show voter details
19 DENIED edit 
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Show voter details
20 DENIED moderate 
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 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
21 DENIED ROLE_USER 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
22 DENIED moderate 
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
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          \n
          A cold start on my desktop (also NVMe), 0.08s.\n
          \n
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          """
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 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
23 DENIED edit 
App\Entity\EntryComment {#4932
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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          Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
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 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
24 DENIED moderate 
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        From Wikipedia, the free encyclopedia\n
        \n
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        \n
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        \n
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        - No misinformation\n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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          Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
          \n
          I tried a cold start of xterm on my older thinkpad with an NVMe drive at ~0.3s.\n
          \n
          A cold start on my desktop (also NVMe), 0.08s.\n
          \n
          I’m unable to reproduce. I wonder if he might’ve had a fresh install with some background operations grinding on, or some indexing going on.
          """
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}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
25 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
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 ACCESS DENIED 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
26 DENIED moderate 
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        \n
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        \n
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        \n
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        - No misinformation\n
        - No NSFW content\n
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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          Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
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 ACCESS ABSTAIN
Show voter details
27 DENIED edit 
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        \n
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          Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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 ACCESS DENIED 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
28 DENIED moderate 
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          Seems unreasonably slow to me that xterm would take a second to start. My two computers running kernel 6.7 are slow than the machine in the test, both have BTRFS on LUKS.\n
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          I tried a cold start of xterm on my older thinkpad with an NVMe drive at ~0.3s.\n
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          A cold start on my desktop (also NVMe), 0.08s.\n
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          I’m unable to reproduce. I wonder if he might’ve had a fresh install with some background operations grinding on, or some indexing going on.
          """
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33 DENIED ROLE_USER 
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34 DENIED moderate 
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
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Show voter details
35 DENIED edit 
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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Show voter details
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Show voter details
49 DENIED ROLE_USER 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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Show voter details
51 DENIED edit 
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 ACCESS DENIED 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
52 DENIED moderate 
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56 DENIED moderate 
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57 DENIED ROLE_USER 
null
 
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58 DENIED moderate 
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    The benchmark with many more metrics: [www.phoronix.com/review/bcachefs-linux-67](https://www.phoronix.com/review/bcachefs-linux-67)\n
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    Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
    \n
    [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
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    I’m sure this is a specific workload that BTRFS struggles with that others handle just fine.\n
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72 DENIED moderate 
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    I’m sure this is a specific workload that BTRFS struggles with that others handle just fine.\n
    \n
    Other workloads BTRFS will be better, and in others it will be worse. There’s no one size fits all.
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    Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
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    E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
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    Btrfs does more than ext4, which can have a negative performance impact, depending on the use case/metric. Usually the features gained by btrfs outweigh the small difference in performance imo.
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    Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
    \n
    E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
    \n
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
76 DENIED moderate 
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
    \n
    E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
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    Btrfs does more than ext4, which can have a negative performance impact, depending on the use case/metric. Usually the features gained by btrfs outweigh the small difference in performance imo.
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Show voter details
77 DENIED ROLE_USER 
null
 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
78 DENIED moderate 
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        - No misinformation\n
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +root: App\Entity\EntryComment {#4342}
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      Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
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      E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
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      Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
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Show voter details
81 DENIED ROLE_USER 
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 ACCESS DENIED 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
83 DENIED edit 
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        Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
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        E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
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        Btrfs does more than ext4, which can have a negative performance impact, depending on the use case/metric. Usually the features gained by btrfs outweigh the small difference in performance imo.
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84 DENIED moderate 
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        Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
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Show voter details
85 DENIED ROLE_USER 
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Show voter details
86 DENIED moderate 
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        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
        \n
        E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
        \n
        tl;dr\n
        \n
        Btrfs does more than ext4, which can have a negative performance impact, depending on the use case/metric. Usually the features gained by btrfs outweigh the small difference in performance imo.
        """
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87 DENIED edit 
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        \n
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        Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
        \n
        E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
        \n
        tl;dr\n
        \n
        Btrfs does more than ext4, which can have a negative performance impact, depending on the use case/metric. Usually the features gained by btrfs outweigh the small difference in performance imo.
        """
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 ACCESS ABSTAIN 
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 ACCESS DENIED 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
88 DENIED moderate 
App\Entity\EntryComment {#4916
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        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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        Filesystems aren’t so simple. Modern advanced filesystems like btrfs, zfs and bcachefs are more than just filesystems.\n
        \n
        E.g. they include features like volume management, compression and sometimes encryption. Most features can also be achieved with for example ext4 + lvm + luks, but it’s nice to have all in one system with unified configuration.\n
        \n
        tl;dr\n
        \n
        Btrfs does more than ext4, which can have a negative performance impact, depending on the use case/metric. Usually the features gained by btrfs outweigh the small difference in performance imo.
        """
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
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        - No hate speech, bigotry, etc\n
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        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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  +body: """
    It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
    \n
    The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
    \n
    Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
    """
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}
 
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91 DENIED edit 
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        From Wikipedia, the free encyclopedia\n
        \n
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
    \n
    The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
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Show voter details
92 DENIED moderate 
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
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        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
    \n
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    """
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Show voter details
93 DENIED ROLE_USER 
null
 
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Show voter details
94 DENIED moderate 
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        From Wikipedia, the free encyclopedia\n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
      \n
      The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
      \n
      Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
      """
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    A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
    \n
    I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
    """
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
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        - No misinformation\n
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        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
      \n
      The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
      \n
      Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
      """
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    A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
    \n
    I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
    """
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"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
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 ACCESS DENIED 
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 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
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Show voter details
96 DENIED moderate 
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
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        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +body: """
      It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
      \n
      The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
      \n
      Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
      """
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  +body: """
    A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
    \n
    I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
    """
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"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
97 DENIED ROLE_USER 
null
 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN
Show voter details
98 DENIED moderate 
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
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        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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        It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
        \n
        The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
        \n
        Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
        """
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    +body: """
      A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
      \n
      I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
      """
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    > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
    \n
    ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
    \n
    Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
    \n
    100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
    """
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        From Wikipedia, the free encyclopedia\n
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        \n
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        - No misinformation\n
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        ### Related Communities\n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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        It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
        \n
        The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
        \n
        Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
        """
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    +body: """
      A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
      \n
      I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
      """
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    > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
    \n
    ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
    \n
    Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
    \n
    100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
    """
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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        +body: "Hold up. I thought btrfs was better than ext4?"
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        It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
        \n
        The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
        \n
        Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
        """
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    +body: """
      A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
      \n
      I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
      """
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    > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
    \n
    ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
    \n
    Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
    \n
    100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
    """
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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          It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
          \n
          The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
          \n
          Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
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        A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
        \n
        I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
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      > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
      \n
      ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
      \n
      Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
      \n
      100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
      """
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    @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
    \n
    A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
    \n
    ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
    """
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            date: 2023-11-10 16:50:15.0 +01:00
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        +root: App\Entity\EntryComment {#4342}
        +body: """
          It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
          \n
          The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
          \n
          Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
          """
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      +root: App\Entity\EntryComment {#4342}
      +body: """
        A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
        \n
        I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
        """
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        date: 2023-11-10 22:09:35.0 +01:00
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    +body: """
      > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
      \n
      ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
      \n
      Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
      \n
      100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
      """
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    @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
    \n
    A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
    \n
    ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
    """
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104 DENIED moderate 
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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        +body: """
          It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
          \n
          The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
          \n
          Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
          """
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      +root: App\Entity\EntryComment {#4342}
      +body: """
        A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
        \n
        I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
        """
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    +body: """
      > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
      \n
      ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
      \n
      Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
      \n
      100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
      """
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  +body: """
    @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
    \n
    A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
    \n
    ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
    """
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        ### Rules\n
        \n
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        - No misinformation\n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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            +body: "Hold up. I thought btrfs was better than ext4?"
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          +body: """
            It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
            \n
            The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
            \n
            Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
            """
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        +body: """
          A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
          \n
          I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
          """
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      +root: App\Entity\EntryComment {#4342}
      +body: """
        > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
        \n
        ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
        \n
        Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
        \n
        100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
        """
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      @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
      \n
      A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
      \n
      ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
      """
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    @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
    \n
    On magnetic disk there is physical location for each bit of data written, for ssd it is all virtual space handled by internal software simulating a magnetic drive. The variation from disk to disk is much higher than the sensitivity of the fs.\n
    \n
    You want accuracy and reliability of data storage, use HDD and Raid!
    """
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
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        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
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        - No hate speech, bigotry, etc\n
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        ### Related Communities\n
        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
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            +body: "Hold up. I thought btrfs was better than ext4?"
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          +body: """
            It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
            \n
            The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
            \n
            Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
            """
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          A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
          \n
          I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
          """
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        > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
        \n
        ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
        \n
        Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
        \n
        100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
        """
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      @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
      \n
      A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
      \n
      ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
      """
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    @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
    \n
    On magnetic disk there is physical location for each bit of data written, for ssd it is all virtual space handled by internal software simulating a magnetic drive. The variation from disk to disk is much higher than the sensitivity of the fs.\n
    \n
    You want accuracy and reliability of data storage, use HDD and Raid!
    """
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108 DENIED moderate 
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +title: "Why btrfs gets huge perf hit with background IO work?"
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            +body: "Hold up. I thought btrfs was better than ext4?"
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          +body: """
            It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
            \n
            The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
            \n
            Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
            """
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        +body: """
          A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
          \n
          I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
          """
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          date: 2023-11-10 22:09:35.0 +01:00
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      +body: """
        > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
        \n
        ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
        \n
        Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
        \n
        100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
        """
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        "@yote_zip@pawb.social"
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    +body: """
      @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
      \n
      A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
      \n
      ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
      """
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    @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
    \n
    On magnetic disk there is physical location for each bit of data written, for ssd it is all virtual space handled by internal software simulating a magnetic drive. The variation from disk to disk is much higher than the sensitivity of the fs.\n
    \n
    You want accuracy and reliability of data storage, use HDD and Raid!
    """
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      +title: "linux"
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
        """
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    +title: "Why btrfs gets huge perf hit with background IO work?"
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              +body: "Hold up. I thought btrfs was better than ext4?"
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            +body: """
              It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
              \n
              The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
              \n
              Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
              """
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              "@blitzkrieg@lemm.ee"
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              date: 2023-11-10 19:45:34.0 +01:00
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          +root: App\Entity\EntryComment {#4342}
          +body: """
            A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
            \n
            I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
            """
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            date: 2023-11-10 22:09:35.0 +01:00
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        +root: App\Entity\EntryComment {#4342}
        +body: """
          > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
          \n
          ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
          \n
          Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
          \n
          100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
          """
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          "@blitzkrieg@lemm.ee"
          "@Max_P@lemmy.max-p.me"
          "@yote_zip@pawb.social"
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          date: 2023-11-10 23:19:00.0 +01:00
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      +root: App\Entity\EntryComment {#4342}
      +body: """
        @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
        \n
        A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
        \n
        ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
        """
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    +body: """
      @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
      \n
      On magnetic disk there is physical location for each bit of data written, for ssd it is all virtual space handled by internal software simulating a magnetic drive. The variation from disk to disk is much higher than the sensitivity of the fs.\n
      \n
      You want accuracy and reliability of data storage, use HDD and Raid!
      """
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  +body: """
    RAID doesn’t checksum and heal the rotten data. It’s game over before you even have a filesystem on top of it, because said filesystem can’t directly access the underlying disks because of the RAID layer.\n
    \n
    Errors *will* occur, and RAID has no way of handling it. You have a RAID1, disk 1 says it’s a 0, disk 2 says it’s a 1. Who’s right? RAID can’t tell, btrfs and ZFS can. RAID won’t even notice there’s a couple flipped bits, it’ll just pass them along. ZFS will just retry the read on both disks, pick the block that matches the checksum, and write the correct data back on the other disk. That’s why people with lots of data loves ZFS and RAIDZ.\n
    \n
    The solution isn’t more reliable hardware, the solution software that can tell you and recover from your failing hardware.
    """
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +title: "Why btrfs gets huge perf hit with background IO work?"
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              +body: "Hold up. I thought btrfs was better than ext4?"
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            +body: """
              It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
              \n
              The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
              \n
              Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
              """
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          +body: """
            A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
            \n
            I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
            """
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            date: 2023-11-10 22:09:35.0 +01:00
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        +root: App\Entity\EntryComment {#4342}
        +body: """
          > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
          \n
          ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
          \n
          Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
          \n
          100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
          """
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          "@yote_zip@pawb.social"
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        @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
        \n
        A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
        \n
        ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
        """
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    +body: """
      @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
      \n
      On magnetic disk there is physical location for each bit of data written, for ssd it is all virtual space handled by internal software simulating a magnetic drive. The variation from disk to disk is much higher than the sensitivity of the fs.\n
      \n
      You want accuracy and reliability of data storage, use HDD and Raid!
      """
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  +body: """
    RAID doesn’t checksum and heal the rotten data. It’s game over before you even have a filesystem on top of it, because said filesystem can’t directly access the underlying disks because of the RAID layer.\n
    \n
    Errors *will* occur, and RAID has no way of handling it. You have a RAID1, disk 1 says it’s a 0, disk 2 says it’s a 1. Who’s right? RAID can’t tell, btrfs and ZFS can. RAID won’t even notice there’s a couple flipped bits, it’ll just pass them along. ZFS will just retry the read on both disks, pick the block that matches the checksum, and write the correct data back on the other disk. That’s why people with lots of data loves ZFS and RAIDZ.\n
    \n
    The solution isn’t more reliable hardware, the solution software that can tell you and recover from your failing hardware.
    """
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"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
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"App\Security\Voter\MessageVoter"
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 ACCESS ABSTAIN 
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"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
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112 DENIED moderate 
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +title: "Why btrfs gets huge perf hit with background IO work?"
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              +body: "Hold up. I thought btrfs was better than ext4?"
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            +body: """
              It’s mostly better, but not in every way. It has a lot of useful features, at a performance cost sometimes. A cost that historically wasn’t a problem with spinning hard drives and relatively slow SATA SSDs but will show up more on really fast NVMes.\n
              \n
              The snapshots, it has to keep track of what’s been modified. Depending on the block size, an update of just a couple bytes can end up as a few 4k write because it’s Copy-on-Write and it has to update a journal and it has to update the block list of the file. But at the same time, copying a 50GB file is instantaneous on btrfs because of the same CoW feature. Most people find the snapshots more useful than eeking out every last bit of performance out of your drive.\n
              \n
              Even ZFS, often considered to be the gold standard of filesystems, is actually kinda slow. But its purpose isn’t to be the fastest, its purpose is throwing an array of 200 drives at it and trusting it to protect you even against some media degradation and random bit flips in your storage with regular scrubs.
              """
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          +root: App\Entity\EntryComment {#4342}
          +body: """
            A couple nits to pick: BTRFS doesn’t use/need journaling because of its CoW nature - data on the disk is always correct because it doesn’t write data back over the same block it came from. Only once data is written successfully will the pointer be moved to the newly-written block. Also, instantaneous copies from BTRFS are actually due to reflinking instead of CoW (XFS can also do reflinking despite not being CoW, and ZFS didn’t have this feature until OpenZFS 2.2 which just released).\n
            \n
            I agree with the ZFS bit and I’m firmly in the BTRFS/ZFS > Ext4/XFS/etc camp unless you have a specific performance usecase. The ability to scrub checksums of data is so invaluable in my opinion, not to mention all the other killer features. People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)
            """
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        +root: App\Entity\EntryComment {#4342}
        +body: """
          > People have been running Ext4 systems for decades pretending that if Ext4 does not see the bitrot, the bitrot does not exist. (then BTRFS picks up a bad checksum and people scold it for being a bad filesystem)\n
          \n
          ZFS made me discover that my onboard SATA controller sucks and returns bad data occasionally under heavy load. My computer cannot complete a ZFS scrub without finding errors, every single time.\n
          \n
          Ext4, bcache and mdadm never complained about it, ever. There was never any sign that something was wrong at all.\n
          \n
          100% worth it if you care about your data. I can definitely feel the hit on my NVMe but it’s also doing so much more.
          """
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        @Max_P@lemmy.max-p.me @yote_zip@pawb.social\n
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        A file system and a raid setup all in one with facebook's code for de-/compression ... yet another piece of software that tries to do the work for several others.\n
        \n
        ext4 will rarely have extreme loads unless all you do is backup and mirroring. For more accurate data read/write and better checks use xfs and external journaling. On M2 it is by far the fastest solution and far more secure than ext.
        """
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      \n
      On magnetic disk there is physical location for each bit of data written, for ssd it is all virtual space handled by internal software simulating a magnetic drive. The variation from disk to disk is much higher than the sensitivity of the fs.\n
      \n
      You want accuracy and reliability of data storage, use HDD and Raid!
      """
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    RAID doesn’t checksum and heal the rotten data. It’s game over before you even have a filesystem on top of it, because said filesystem can’t directly access the underlying disks because of the RAID layer.\n
    \n
    Errors *will* occur, and RAID has no way of handling it. You have a RAID1, disk 1 says it’s a 0, disk 2 says it’s a 1. Who’s right? RAID can’t tell, btrfs and ZFS can. RAID won’t even notice there’s a couple flipped bits, it’ll just pass them along. ZFS will just retry the read on both disks, pick the block that matches the checksum, and write the correct data back on the other disk. That’s why people with lots of data loves ZFS and RAIDZ.\n
    \n
    The solution isn’t more reliable hardware, the solution software that can tell you and recover from your failing hardware.
    """
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Show voter details
117 DENIED ROLE_USER 
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    This screenshot is the only metric where btrfs is incredibly slow.\n
    \n
    Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
    \n
    I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
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    > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
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    [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
    \n
    Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
    \n
    [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
    """
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    This screenshot is the only metric where btrfs is incredibly slow.\n
    \n
    Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
    \n
    I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
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    > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
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    [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
    \n
    Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
    \n
    [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
    """
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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  +body: """
    This screenshot is the only metric where btrfs is incredibly slow.\n
    \n
    Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
    \n
    I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
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    > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
    \n
    [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
    \n
    Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
    \n
    [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
    """
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    +body: """
      This screenshot is the only metric where btrfs is incredibly slow.\n
      \n
      Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
      \n
      I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
      \n
      > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
      \n
      [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
      \n
      Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
      \n
      [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
      """
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        - No misinformation\n
        - No NSFW content\n
        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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      This screenshot is the only metric where btrfs is incredibly slow.\n
      \n
      Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
      \n
      I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
      \n
      > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
      \n
      [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
      \n
      Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
      \n
      [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
      """
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      +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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    +body: """
      This screenshot is the only metric where btrfs is incredibly slow.\n
      \n
      Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
      \n
      I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
      \n
      > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
      \n
      [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
      \n
      Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
      \n
      [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
      """
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  +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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        This screenshot is the only metric where btrfs is incredibly slow.\n
        \n
        Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
        \n
        I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
        \n
        > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
        \n
        [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
        \n
        Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
        \n
        [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
        """
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    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
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        +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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      +body: """
        This screenshot is the only metric where btrfs is incredibly slow.\n
        \n
        Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
        \n
        I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
        \n
        > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
        \n
        [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
        \n
        Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
        \n
        [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
        """
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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        +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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      +body: """
        This screenshot is the only metric where btrfs is incredibly slow.\n
        \n
        Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
        \n
        I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
        \n
        > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
        \n
        [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
        \n
        Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
        \n
        [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
        """
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    +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
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      +body: """
        This screenshot is the only metric where btrfs is incredibly slow.\n
        \n
        Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
        \n
        I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
        \n
        > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
        \n
        [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
        \n
        Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
        \n
        [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
        """
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  +body: "Note that in this benchmark, bcachefs had [a debug variable turned on](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7) that allegedly severely hampered performance. Bcachefs has released an update to disable this variable but Phoronix hasn’t redone benchmarks yet. I wouldn’t put much value into any bcachefs-related comparisons from this current benchmark."
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    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
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        +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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      +body: """
        This screenshot is the only metric where btrfs is incredibly slow.\n
        \n
        Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
        \n
        I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
        \n
        > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
        \n
        [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
        \n
        Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
        \n
        [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
        """
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    +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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  +root: App\Entity\EntryComment {#4415}
  +body: "Note that in this benchmark, bcachefs had [a debug variable turned on](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7) that allegedly severely hampered performance. Bcachefs has released an update to disable this variable but Phoronix hasn’t redone benchmarks yet. I wouldn’t put much value into any bcachefs-related comparisons from this current benchmark."
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    +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
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      date: 2023-11-10 16:09:43.0 +01:00
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  +parent: App\Entity\EntryComment {#4755
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        +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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      +root: App\Entity\EntryComment {#4415}
      +body: """
        This screenshot is the only metric where btrfs is incredibly slow.\n
        \n
        Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
        \n
        I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
        \n
        > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
        \n
        [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
        \n
        Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
        \n
        [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
        """
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    +root: App\Entity\EntryComment {#4415}
    +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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  +root: App\Entity\EntryComment {#4415}
  +body: "Note that in this benchmark, bcachefs had [a debug variable turned on](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7) that allegedly severely hampered performance. Bcachefs has released an update to disable this variable but Phoronix hasn’t redone benchmarks yet. I wouldn’t put much value into any bcachefs-related comparisons from this current benchmark."
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
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        - No hate speech, bigotry, etc\n
        \n
        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +title: "Why btrfs gets huge perf hit with background IO work?"
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          +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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        +root: App\Entity\EntryComment {#4415}
        +body: """
          This screenshot is the only metric where btrfs is incredibly slow.\n
          \n
          Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
          \n
          I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
          \n
          > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
          \n
          [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
          \n
          Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
          \n
          [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
          """
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      +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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    +body: "Note that in this benchmark, bcachefs had [a debug variable turned on](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7) that allegedly severely hampered performance. Bcachefs has released an update to disable this variable but Phoronix hasn’t redone benchmarks yet. I wouldn’t put much value into any bcachefs-related comparisons from this current benchmark."
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  +body: "Interesting, that hopefully explains the weak IO troughput. Thank you."
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139 DENIED edit 
App\Entity\EntryComment {#4974
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        From Wikipedia, the free encyclopedia\n
        \n
        Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).\n
        \n
        Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.\n
        \n
        ### Rules\n
        \n
        - Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.\n
        - No misinformation\n
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        ### Related Communities\n
        \n
        - [!opensource@lemmy.ml](https://lemmy.ml/c/opensource)\n
        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
        - [!technology@lemmy.ml](https://lemmy.ml/c/technology)\n
        - [!libre_hardware@lemmy.ml](https://lemmy.ml/c/libre_hardware)\n
        \n
        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
    +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
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          +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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        +body: """
          This screenshot is the only metric where btrfs is incredibly slow.\n
          \n
          Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
          \n
          I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
          \n
          > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
          \n
          [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
          \n
          Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
          \n
          [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
          """
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      +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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    +body: "Note that in this benchmark, bcachefs had [a debug variable turned on](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7) that allegedly severely hampered performance. Bcachefs has released an update to disable this variable but Phoronix hasn’t redone benchmarks yet. I wouldn’t put much value into any bcachefs-related comparisons from this current benchmark."
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  +body: "Interesting, that hopefully explains the weak IO troughput. Thank you."
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    +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
    +slug: "Why-btrfs-gets-huge-perf-hit-with-background-IO-work"
    +title: "Why btrfs gets huge perf hit with background IO work?"
    +url: "https://lemmy.world/pictrs/image/7ca726e4-b738-4b93-b60e-f9cee58a1be9.png"
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          +body: "I think it’s not btrfs that’s slow, it’s bcachefs that’s insanely fast. Bcachefs almost as fast as ext4 while having that many features is insane."
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        +body: """
          This screenshot is the only metric where btrfs is incredibly slow.\n
          \n
          Bcachefs random and sequential writes and reads are much slower than other filesystems in this benchmark.\n
          \n
          I have no idea how the actual real world performance will be. Bcachefs still misses a lot of features so I’ll continue to follow the development, hopefully including performance improvements.\n
          \n
          > Bcachefs sequential write performance in this out-of-the-box comparison was coming in at around half the speed of Btrfs while XFS, F2FS, and EXT4 were the fastest.\n
          \n
          [www.phoronix.com/review/bcachefs-linux-67/2](https://www.phoronix.com/review/bcachefs-linux-67/2)\n
          \n
          Edit: The benchmarks were done with a debug variable set, which explains the weak IO.\n
          \n
          [www.phoronix.com/news/Bcachefs-Updated-Linux-6.7](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7)
          """
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      +body: "Wait, so the benchmarks mostly contradict claims that bcachefs is almost as fast as ext4 except in application startup time? What kind of test performed for that application startup time benchmark?"
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    +body: "Note that in this benchmark, bcachefs had [a debug variable turned on](https://www.phoronix.com/news/Bcachefs-Updated-Linux-6.7) that allegedly severely hampered performance. Bcachefs has released an update to disable this variable but Phoronix hasn’t redone benchmarks yet. I wouldn’t put much value into any bcachefs-related comparisons from this current benchmark."
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  +body: "Interesting, that hopefully explains the weak IO troughput. Thank you."
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        \n
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        \n
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        - [!libre_culture@lemmy.ml](https://lemmy.ml/c/libre_culture)\n
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        Community icon by [Alpár-Etele Méder](https://www.iconfinder.com/pocike), licensed under [CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)
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"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS DENIED 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details