The search for the correct amount of split-lock misery [LWN.net]

The search for the correct amount of split-lock misery

Posted Nov 8, 2022 8:39 UTC (Tue) by roblucid (guest, #48964)
In reply to: The search for the correct amount of split-lock misery by mb
Parent article: The search for the correct amount of split-lock misery

No, a performance bug that prevents effective multi-core operation has been detected and should be fixed.
Gamers are concerned about core scaling, the application is sabotaging itself.

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The search for the correct amount of split-lock misery

Posted Nov 8, 2022 13:10 UTC (Tue) by Wol (subscriber, #4433) [Link]

The question is simple - if the majority of apps affected by this are games, then this is a user space regression. It needs to be reverted.

Seeing as it appears to be pretty much only gaming systems that are affected, then it most definitely is a user space regression. Especially as a lot of these applications cannot be fixed by the users. And driving gamers to Windows/Apple will be seriously damaging to linux.

And lastly, isn't the (mis)feature itself actually a HARDWARE bug? "Mitigating" the bug by rendering the computer pretty much unusable for its intended purpose isn't a good idea!

Cheers,
Wol