Re: [PATCH] sched/fair: avoid vruntime compensation for SCHED_IDLE task

From: Vincent Guittot
Date: Thu Aug 20 2020 - 10:10:18 EST


On Thu, 20 Aug 2020 at 15:44, <peterz@xxxxxxxxxxxxx> wrote:
>
> > That's been said, not compensating the vruntime for a sched_idle task
> > makes sense for me. Even if that will only help for others task in the
> > same cfs_rq
>
> Yeah, but it is worth the extra pointer chasing and branches?

For that I let Jiang provides figures to show the worthful

>
> Then again, I suppose we started all that with the idle_h_nr_running
> nonsense :/