Re: [PATCH] sched/fair: Optimize select_idle_core

[Srikar Dronamraju]

Hi Vincent,

> >
> > Collecting ticks on a Power 9 SMT 8 system around select_idle_core
> > while running schbench shows us that
> >
> > (units are in ticks, hence lesser is better)
> > Without patch
> >     N           Min           Max        Median           Avg        Stddev
> > x 130           151          1083           284     322.72308     144.41494
> >
> >
> > With patch
> >     N           Min           Max        Median           Avg        Stddev   Improvement
> > x 164            88           610           201     225.79268     106.78943        30.03%
> 
> Thanks for the figures. Might be good to include them in the commit message
> 

Since I needed a debug/hack patch on top of upstream/my-patch to get these
numbers, I wasn't sure if this would be ideal to be included in a commit
message. But if you still think it's good to have, I can re-spin the patch
with these numbers included.

> Reviewed-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
>

Thanks.

-- 
Thanks and Regards
Srikar Dronamraju