Re: [PATCH v1 0/2] cpuidle: teo: Refine handling of short idle intervals

[Rafael J. Wysocki]

On Wed, Apr 9, 2025 at 8:52 AM Artem Bityutskiy
<artem.bityutskiy@xxxxxxxxxxxxxxx> wrote:
>
> On Thu, 2025-04-03 at 21:16 +0200, Rafael J. Wysocki wrote:
> > Hi Everyone,
> >
> > This series is intended to address an issue with overly aggressive selection
> > of idle state 0 (the polling state) in teo on x86 in some cases when timer
> > wakeups dominate the CPU wakeup pattern.
>
> Hi Rafael, I ran SPECjbb2015 with and without these 2 patches on Granite Rapids
> Xeon (GNR).
>
> Expectation: no measurable difference, because there is almost no POLL in case
> of SPECjbb2015 on GNR.
>
> Result: no measurable difference.
>
> Conclusion: these 2 patches do not introduce a regression as measured by
> SPECjbb2015 on GNR.
>
> "No regression" is also a useful piece of information, so reporting.

Thank you!