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

Mike Galbraith
2010-01-22T09:25:25Z

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