Re: stable 6.6: commit "sched/cpufreq: Rework schedutil governor performance estimation' causes a regression

On Thu, 20 Nov 2025 at 05:45, Sergey Senozhatsky senozhatsky@chromium.org wrote:

Hi,

We are observing a performance regression on one of our arm64 boards. We tracked it down to the linux-6.6.y commit ada8d7fa0ad4 ("sched/cpufreq: Rework schedutil governor performance estimation").

Do you have the fix ? https://lore.kernel.org/all/170539970061.398.16662091173685476681.tip-bot2@t...

And do you have more details to share?

UI speedometer benchmark: w/commit: 395 +/-38 w/o commit: 439 +/-14