Messages in this thread | ![/](/images/icornerl.gif) | | From | Linus Torvalds <> | Date | Wed, 10 Jan 2024 14:57:14 -0800 | Subject | Re: [GIT PULL] Scheduler changes for v6.8 |
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On Wed, 10 Jan 2024 at 14:41, Linus Torvalds <torvalds@linux-foundation.org> wrote: > > It's one of these two: > > f12560779f9d sched/cpufreq: Rework iowait boost > 9c0b4bb7f630 sched/cpufreq: Rework schedutil governor performance estimation > > one more boot to go, then I'll try to revert whichever causes my > machine to perform horribly much worse.
I guess it should come as no surprise that the result is
9c0b4bb7f6303c9c4e2e34984c46f5a86478f84d is the first bad commit
but to revert cleanly I will have to revert all of
b3edde44e5d4 ("cpufreq/schedutil: Use a fixed reference frequency") f12560779f9d ("sched/cpufreq: Rework iowait boost") 9c0b4bb7f630 ("sched/cpufreq: Rework schedutil governor performance estimation")
This is on a 32-core (64-thread) AMD Ryzen Threadripper 3970X, fwiw.
I'll keep that revert in my private test-tree for now (so that I have a working machine again), but I'll move it to my main branch soon unless somebody has a quick fix for this problem.
Linus
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