Messages in this thread | | | Date | Mon, 7 Aug 2023 17:38:34 +0200 (CEST) | From | Anna-Maria Behnsen <> | Subject | Re: [RFT][PATCH v2 0/3] cpuidle: teo: Do not check timers unconditionally every time |
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On Thu, 3 Aug 2023, Rafael J. Wysocki wrote:
> On Thu, Aug 3, 2023 at 11:12 PM Rafael J. Wysocki <rjw@rjwysocki.net> wrote: > > > > Hi Folks, > > > > This is the second iteration of: > > > > https://lore.kernel.org/linux-pm/4511619.LvFx2qVVIh@kreacher/ > > > > with an additional patch. > > > > There are some small modifications of patch [1/3] and the new > > patch causes governor statistics to play a role in deciding whether > > or not to stop the scheduler tick. > > > > Testing would be much appreciated! > > For convenience, this series is now available in the following git branch: > > git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \ > pm-cpuidle-teo >
Gauthams tests and the distribution of idle time durations looks pretty good. Also the prevention of calling tick_nohz_get_sleep_length() is very nice (21477 calls of tick_nohz_next_event() and the tick was stopped 2670 times).
Here is the deviation of idle time durations (based on your branch):
Idle Total 2670 100.00% x >= 4ms 2537 95.02% 4ms> x >= 2ms 19 0.71% 2ms > x >= 1ms 10 0.37% 1ms > x >= 500us 7 0.26% 500us > x >= 250us 6 0.22% 250us > x >=100us 13 0.49% 100us > x >= 50us 17 0.64% 50us > x >= 25us 25 0.94% 25us > x >= 10us 22 0.82% 10us > x > 5us 9 0.34% 5us > x 5 0.19%
Thanks,
Anna-Maria | |