Re: [patch] voluntary-preempt-2.6.8.1-P0

[Lee Revell]

On Sun, 2004-08-15 at 23:28, Ingo Molnar wrote:
> * Lee Revell <rlrevell@xxxxxxxxxxx> wrote:
> 
> > I believe the constant-time behavior that I reported was an artifact
> > of ALSA xrun debugging.  Now it seems like the latency produced *does*
> > correspond directly to the amount of memory being mlockall'ed.  If
> > ./mlockall-test 1500 triggers an xrun at all it's ~0.2ms.  3000
> > triggers a ~1ms xrun, and 10000 a ~3 ms xrun.
> 
> could you try more extreme values - e.g. does 100 MB cause a 30 msec
> xrun?
> 

This causes a series of xruns, ranging from maybe 2 to 10ms.

Lee

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