Re: [RFC 00/10] perf: Add cputime events/metrics

[Jiri Olsa]

On Wed, Sep 26, 2018 at 04:44:08PM +0200, Milian Wolff wrote:
> On Thursday, June 7, 2018 1:10:18 AM CEST Andi Kleen wrote:
> > > I had some issues with IDLE counter being miscounted due to stopping
> > > of the idle tick. I tried to solve it in this patch (it's part of the
> > > 
> > > patchset):
> > >   perf/cputime: Don't stop idle tick if there's live cputime event
> > > 
> > > but I'm pretty sure it's wrong and there's better solution.
> > 
> > At least on intel we already have hardware counters for different idle
> > states. You just would need to add them and convert to the same
> > unit.
> > 
> > But of course it's still useful when this is not available.
> > 
> > > My current plan is now to read those counters in perf top/record/report
> > > to show (at least) the idle percentage for the current profile.
> > 
> > It's useful. Thanks for working on it. I was thinking about doing
> > something similar for some time.
> 
> Hey Jiri,
> 
> what happened to this patch series? I also believe it's super useful, even 
> when it's not yet perfect.

heya,
got sidetracked.. thanks for feedback, will refresh
and repost sane version

thanks,
jirka