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From: Con Kolivas <conman@kolivas.net>
To: linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@digeo.com>
Subject: [BENCHMARK] fork_load module tested for contest
Date: Thu, 26 Sep 2002 00:42:16 +1000	[thread overview]
Message-ID: <1032964936.3d91cb48b1cca@kolivas.net> (raw)



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:

noload:
Kernel                  Time            CPU             Ratio
2.4.19                  72.90           99%             1.00
2.4.19-ck7              71.55           100%            0.98
2.5.38                  73.86           99%             1.01
2.5.38-mm2              73.93           99%             1.01

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
Preempt=N for all other kernels

Clearly you can see the 2.5 kernels have a substantial lead over the current
stable kernel.

This load module is not part of the contest package yet. I could certainly
change it to fork n processes but I'm not really sure just how many n should be.

Comments?

Con Kolivas

P.S. Results have negligible differences on repeat testing.

             reply	other threads:[~2002-09-25 14:37 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-25 14:42 Con Kolivas [this message]
2002-09-25 14:52 ` Rik van Riel
2002-09-25 22:14 ` Cliff White
2002-09-25 23:07   ` Con Kolivas
2002-09-26  2:57 ` Useful fork info? WAS " Con Kolivas
2002-09-26  8:25   ` Ingo Molnar
2002-09-26 14:42     ` Rik van Riel
2002-09-26  8:36   ` William Lee Irwin III

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