From: Rik van Riel <riel@conectiva.com.br>
To: Roger Larsson <roger.larsson@skelleftea.mail.telia.com>
Cc: Adam Goldstein <Whitewlf@Whitewlf.net>,
<linux-kernel@vger.kernel.org>, Adam Taylor <iris@servercity.com>
Subject: Re: Very High Load, kernel 2.4.18, apache/mysql
Date: Tue, 24 Sep 2002 22:28:23 -0300 (BRT) [thread overview]
Message-ID: <Pine.LNX.4.44L.0209242223040.22735-100000@imladris.surriel.com> (raw)
In-Reply-To: <200209250259.12810.roger.larsson@skelleftea.mail.telia.com>
On Wed, 25 Sep 2002, Roger Larsson wrote:
> Have you been able to determine if it is I/O bound or CPU bound?
> Or maybe using to much CPU to do I/O?
>
> Does anyone know what virtual memory system does Mandrake uses?
If it's IO bound, it's quite possible the problem is the disk
elevator and Andrew Morton's read-latency2 patch might help
somewhat (if the system is heavy on both reads and writes).
If the system is short on RAM and/or swapping, that might be
a VM thing or just a shortage of RAM...
It would make sense to study the output of top and vmstat for
a few hours to identify exactly what the problem is, instead
of trying to fix all kinds of random things that aren't the
core problem.
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 1:23 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-24 23:27 Adam Goldstein
2002-09-25 0:59 ` Roger Larsson
2002-09-25 1:28 ` Rik van Riel [this message]
2002-09-25 2:38 ` Adam Goldstein
2002-09-25 5:24 ` Simon Kirby
2002-09-25 6:56 ` Adam Goldstein
2002-09-25 7:20 ` Simon Kirby
2002-09-25 7:51 ` Paweł Krawczyk
2002-09-25 13:13 ` Rik van Riel
2002-09-25 22:54 ` Jose Luis Domingo Lopez
2002-09-26 17:09 ` Joachim Breuer
2002-09-26 17:16 ` Rik van Riel
2002-09-25 3:50 ` Bernd Eckenfels
2002-09-25 3:48 ` Bernd Eckenfels
[not found] <3D90FD7B.9080209@wanadoo.fr>
2002-09-25 1:12 ` Adam Goldstein
[not found] <0EBC45FCABFC95428EBFC3A51B368C9501AF4F@jessica.herefordshire.gov.uk>
2002-09-25 20:16 ` Adam Goldstein
2002-09-25 21:26 ` Roger Larsson
2002-09-26 3:03 ` Ernst Herzberg
2002-09-26 18:36 ` Marco Colombo
2002-09-26 19:27 ` Rik van Riel
2002-09-26 20:02 ` Marco Colombo
2002-09-26 20:09 ` Rik van Riel
2002-09-26 20:25 ` Ernst Herzberg
2002-09-27 8:52 ` Martin Brulisauer
2002-10-01 5:36 ` David Rees
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