Messages in this thread | | | Date | Thu, 24 Feb 2022 10:40:42 -0300 | From | Marcelo Tosatti <> | Subject | Re: [RFC PATCH] tick/sched: Ensure quiet_vmstat() is called when the idle tick was stopped too |
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On Thu, Feb 24, 2022 at 01:28:16PM +0000, Aaron Tomlin wrote: > On Thu 2022-02-24 10:14 -0300, Marcelo Tosatti wrote: > > If the per-CPU vmstat_update is limited to happen once per second, that > > shouldnt be a significant performance impact? > > Perhaps not. Albeit, is the interrupt worth it?
Its a requirement for correctness right?
> Then again it could indeed > be a long time before the idle task is selected and a return to idle code > were we'd check for any remaining differentials with the aforementioned > patch.
Or a long time before userspace returns to kernel.
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