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Date: Wed, 25 Sep 2002 11:52:35 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
X-X-Sender: riel@imladris.surriel.com
To: Con Kolivas <conman@kolivas.net>
cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@digeo.com>
Subject: Re: [BENCHMARK] fork_load module tested for contest
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On Thu, 26 Sep 2002, Con Kolivas wrote:

> I've been trialling a new load module for the contest benchmark
> (http://contest.kolivas.net) which simply forks a process that does
> nothing, waits for it to die, then repeats. Here are the results I have
> obtained so far:

> fork_load:
> Kernel                  Time            CPU             Ratio
> 2.4.19                  100.05          69%             1.37
> 2.4.19-ck7              74.65           95%             1.02
> 2.5.38                  77.35           95%             1.06
> 2.5.38-mm2              76.99           95%             1.06
>
> ck7 uses O1, preempt, low latency

Looks like the O(1) scheduler has a problem, then.  The continuous
fork() loop should get 20% of the CPU, not 5%.

regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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