Re: [LNG] Re: [Query] Ticks happen in pair for NO_HZ_FULL cores ?

Viresh Kumar
2013-12-18T14:33:14Z

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 ?