Re: scheduler vs hardware? (was Re: another i7 (linux) bug?)

[Mike Galbraith]

On Fri, 2010-01-22 at 09:51 +0100, Peter Zijlstra wrote:

> My laptop does:
> 
> 
> # time nice -n 19 lame -b 256 -V0 -h youcantdothat.wav - > /dev/null

> real    0m3.273s
> user    0m3.217s
> sys     0m0.022s
> 
> 
> # time nice -n 0 lame -b 256 -V0 -h youcantdothat.wav - > /dev/null

> real    0m1.121s
> user    0m1.102s
> sys     0m0.013s

I don't see any way that can be scheduler (knocks wood).  Could it be
cpufreq?  IIRC there is or was an ignore nice gizmo in there.

	-Mike 

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