Re: [PATCH] 2.3.41 scheduler change

From: Rik van Riel (riel@nl.linux.org)
Date: Sat Jan 29 2000 - 17:32:33 EST


On Sat, 29 Jan 2000, Jamie Lokier wrote:
> Rik van Riel wrote:
> > I haven't done a lot of performance tests with this scheduler
> > yet, but xmms seems to use about 20% less CPU with this patch
> > than without ...
>
> Are you sure that CPU measurement is real? These sort of changes
> tend to break process accounting.

I agree that process accounting is kind of random.
However, it is exactly this randomness that makes
me believe that it really isn't a measurement fault.

Before the patch, xmms cpu usage varied between 70
and 95%. Now it varies between 50 and 75%, this
looks like too big a thing to be random.

regards,

Rik

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