Re: [PATCH v6 0/2] sched: Optionally skip uclamp logic in fast path

[Vincent Guittot]

On Mon, 6 Jul 2020 at 12:41, Qais Yousef <qais.yousef@xxxxxxx> wrote:
>
> On 07/03/20 14:09, Vincent Guittot wrote:
> > I have run the perf bench sched pipe that have have already run
> > previously with this v6 and the results are similar to my previous
> > tests:
> > The impact is -1.61% similarly to v2 which is better compared the
> > original -3.66% without your patch
>
> Thanks Vincent.
>
> Can you afford doing a capture of `perf record` and share the resulting
> perf.dat with vmlinux (with debug symbols)?

Will try to make it by end of the week

>
> Having a before/after capture would be even better.
>
> Not sure if we can do  much about this -1.61% in your case, but it'd be good to
> understand why if possible. perf bench sched pipe is very sensitive to tiniest
> of changes which could be due to binary-to-binary differences.
>
> Thanks
>
> --
> Qais Yousef