I know very little about contributing to open source but appreciated reading this. Seems like often the interpersonal element is the biggest challenge and the author handled it well.
Looks like you have your answer, but there are a crazy number of possible issues.
The biggest cause is misreading the performance specs.
A partial list of other options:
Mechanical drives store data in rings. Outer rings have higher speeds than inner due to constant angular velocity.
Seeks cost a lot of throuput on mechanical drives.
Oversubscribed drive cables.
HBA issues.
PCIe data path conflicts
Slow RAM
RAM full or busy
Extra cpy within RAM
NUMA path issues (of drives are connected to different NUMA nodes. Not an issue on desktops.)
CPU too busy
Transfer software doing extra things
File system doing extra.
RAID doing extra.
NIC on a different NUMA node than HBA (can be good or bad).
NIC sharing the data path in a conflicting way.
There are others. Start with checking theoretical performance from data sheets.
Also, details matter, and I don’t have enough of them to guess.
Since he doesn't mention it in his 'fantastic' reporting, OpenSSH 9.6 was released Monday that will patch this attack. Also, since he doesn't mention it, if on the Internet, the MITM would have to be installed at both end points (client side and server side) to be effective without the patch.
Since he doesn’t mention it in his ‘fantastic’ reporting, OpenSSH 9.6 was released Monday that will patch this attack.
I am tempted to delete this post just for the article’s stupid clickbait headline, but it still will probably cause some people to go update their OpenSSH installs, so… meh.
Anyone who actually wants to know details of the vulnerability should read the website about it which is obviously much better than this article.
Also, since he doesn’t mention it, if on the Internet, the MITM would have to be installed at both end points (client side and server side) to be effective without the patch.
Huh? No. The attacker doesn’t need to be in two places or even near either end per se, they could be located at any fully on-path position between the client and server.
You didn’t mention if this is a HDD or an SDD. If it’s a HDD, you will never even reach SATA 2 speeds, although you should be able to saturate SATA 1. Realistically you might be able to push around 200MB/s on newer HDDs but that’s assuming nothing else gets in your way.
What is controlling the SATA drivers? A lot of times the stuff that comes on motherboards isn’t the greatest and getting a dedicated storage controller allows you to saturate the drive much more thoroughly. Specially if they have big caches.
The issue with those numbers is that they don’t account for people having multiple devices. My PC, Laptop, and Steam Deck all download apps from flathub, so I’m likely counted multiple times. On the other hand most people only use one device, so the actual numbers probably don’t doffer much. It’s an estimate anyway.
Edit: I’m not surprised the amount of people using flatpak/flathub increased so much. It’s my preferred method of installing proprietary software and works on any distro, even unconventional ones like NixOS or Alpine. Sandboxing continues to get better, be it isolation or usability.
I know there’s abit of a war going on about the technical merits of flatpaks which I don’t know enough about the Unix world to fully understand.
As a newer user flatpaks have been pretty great, I like having the Android like permissions system through flatseal especially for my proprietary apps like Discord.
I dunno if I’d go all in on using only flatpaks but for what it is, consider me a fan.
You’ll need to be a bit more specific about the iMac. What year is it?
If it’s pre-2017, I’d expect some difficulty with the WiFi. If it’s newer, you might have luck with wiki.t2linux.org/distributions/…/installation/ . I haven’t followed that guide, so YMMV.
Go for it then! Gentoo is a blast (if you enjoy this sort of thing) and is surprisingly stable once you get it set up.
One tip, before I forget, is to save your firmware from MacOS before wiping the drive. Unfortunately I don’t remember where it’s located, and no longer have access to try and find it 😅
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