Re: sched: tweak select_idle_sibling to look for idle threads

From: Peter Zijlstra
Date: Sun May 01 2016 - 04:53:18 EST

On Sun, May 01, 2016 at 09:12:33AM +0200, Mike Galbraith wrote:
> On Sat, 2016-04-30 at 14:47 +0200, Peter Zijlstra wrote:

> > Can you guys have a play with this; I think one and two node tbench are
> > good, but I seem to be getting significant run to run variance on that,
> > so maybe I'm not doing it right.
> Nah, tbench is just variance prone. It got dinged up at clients=cores
> on my desktop box, on 4 sockets the high end got seriously dinged up.

Ouch, yeah, big hurt. Lets try that again... :-)