Re: [patch v5 06/15] sched: log the cpu utilization at rq

Peter Zijlstra
2013-02-20T15:22:33Z

On Wed, 2013-02-20 at 22:33 +0800, Alex Shi wrote:
> > You don't actually compute the rq utilization, you only compute the
> > utilization as per the fair class, so if there's significant RT
> activity
> > it'll think the cpu is under-utilized, whihc I think will result in
> the
> > wrong thing.
>
> yes. A bit complicit to resolve this. Any suggestions on this, guys?

Shouldn't be too hard seeing as we already track cpu utilization for !
fair usage; see rq::rt_avg and scale_rt_power.