Re: [PATCH] perf stat: Show percore counts in per CPU output

[Jin, Yao]

On 2/11/2020 5:04 AM, Jiri Olsa wrote:
> On Mon, Feb 10, 2020 at 09:01:59AM -0800, Andi Kleen wrote:
> > > > With --percore-show-thread, CPU0 and CPU4 have the same counts (CPU0 and
> > > > CPU4 are siblings, e.g. 2,453,061 in my example). The value is sum of CPU0 +
> > > > CPU4.
> > >
> > > so it shows percore stats but displays all the cpus? what is this good for?
> >
> > This is essentially a replacement for the any bit (which is gone in Icelake).
> > Per core counts are useful for some formulas, e.g. CoreIPC
> >
> > The original percore version was inconvenient to post process. This
> > variant matches the output of the any bit.
>
> I see, please put this to the changelog/doc
>
> thanks,
> jirka

Thanks Jiri, thanks Andi!

I will put the explanation in v2.

Thanks
Jin Yao