Re: [patch v4 0/18] sched: simplified fork, release load avg andpower awareness scheduling

[Mike Galbraith]

On Sun, 2013-01-27 at 21:25 +0800, Alex Shi wrote: 
> On 01/27/2013 06:35 PM, Borislav Petkov wrote:
> > On Sun, Jan 27, 2013 at 05:36:25AM +0100, Mike Galbraith wrote:
> >> With aim7 compute on 4 node 40 core box, I see stable throughput
> >> improvement at tasks = nr_cores and below w. balance and powersaving. 
... 
> > Ok, this is sick. How is balance and powersaving better than perf? Both
> > have much more jobs per minute than perf; is that because we do pack
> > much more tasks per cpu with balance and powersaving?
> 
> Maybe it is due to the lazy balancing on balance/powersaving. You can
> check the CS times in /proc/pid/status.

Well, it's not wakeup path, limiting entry frequency per waker did zip
squat nada to any policy throughput.

-Mike

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