Re: [RFC] sched: The removal of idle_balance()
From: Mike Galbraith
Date: Sun Feb 17 2013 - 01:26:35 EST
On Fri, 2013-02-15 at 01:13 -0500, Steven Rostedt wrote:
> I've been working on cleaning up the scheduler a little and I moved the
> call to idle_balance() from directly in the scheduler proper into the
> idle class. Benchmarks (well hackbench) improved slightly as I did this.
> I was adding some more tweaks and running perf stat on the results when
> I made a mistake and notice a drastic change.
> My runs looked something like this on my i7 4 core 4 hyperthreads:
> 293,801,912,874 cycles # 1.470 GHz ( +- 4.20% ) [100.00%]
> 215,927,081,108 cycles # 2.198 GHz ( +- 5.48% ) [100.00%]
Hm. Maybe set governor to performance?
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