Messages in this thread | | | Date | Wed, 18 Dec 2013 20:03:12 +0530 | Subject | Re: [LNG] Re: [Query] Ticks happen in pair for NO_HZ_FULL cores ? | From | Viresh Kumar <> |
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On 18 December 2013 19:21, Kevin Hilman <khilman@linaro.org> wrote: > Ah, I see. So you're basically asking why we can't evaluate whether to > turn off the tick more often, for example right after the workqueues are > done. I suppose Frederic may have some views on that, but there's > likely additional overhead from those checks as well as that workqueues > may not be the only thing keeping us out of NO_HZ.
I see that sched_switch is called at the end most of the times so an check there might be useful ?
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