From: Rik van Riel <riel@conectiva.com.br>
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
Date: Wed, 25 Sep 2002 11:52:35 -0300 (BRT) [thread overview]
Message-ID: <Pine.LNX.4.44L.0209251151220.22735-100000@imladris.surriel.com> (raw)
In-Reply-To: <1032964936.3d91cb48b1cca@kolivas.net>
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/
Spamtraps of the month: september@surriel.com trac@trac.org
next prev parent reply other threads:[~2002-09-25 14:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-25 14:42 [BENCHMARK] fork_load module tested for contest Con Kolivas
2002-09-25 14:52 ` Rik van Riel [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Pine.LNX.4.44L.0209251151220.22735-100000@imladris.surriel.com \
--to=riel@conectiva.com.br \
--cc=akpm@digeo.com \
--cc=conman@kolivas.net \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).