On Fri, Aug 30, 2024 at 1:00 AM Alexander Lakhin <exclusion@gmail.com> wrote:
> I looked at two perf profiles of such out-of-sync processes and found no
> extra calls or whatsoever in the slow one, it just has the number of perf
> samples increased proportionally. It made me suspect CPU frequency
> scaling... Indeed, with the "performance" governor set and the boost mode
> disabled, I'm now seeing much more stable numbers (I do this tuning before
> running performance tests, but I had forgotten about that when I ran that
> your test, my bad).
Aha, mystery solved.
I have pushed the fix. Thanks!