From: bert hubert <bert.hubert@netherlabs.nl>
To: Jason Schoonover <jasons@pioneer-pra.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: High load average on disk I/O on 2.6.17-rc3
Date: Sun, 7 May 2006 01:03:20 +0200 [thread overview]
Message-ID: <20060506230320.GA3463@outpost.ds9a.nl> (raw)
In-Reply-To: <200605051010.19725.jasons@pioneer-pra.com>
On Fri, May 05, 2006 at 10:10:19AM -0700, Jason Schoonover wrote:
> Whenever I copy any large file (over 500GB) the load average starts to slowly
> rise and after about a minute it is up to 7.5 and keeps on rising (depending
> on how long the file takes to copy). When I watch top, the processes at the
> top of the list are cp, pdflush, kjournald and kswapd.
Load average is a bit of an odd metric in this case, try looking at the
output from 'vmstat 1', and especially the 'id' column. As long as that
doesn't rise, you don't have an actual problem.
The number of processes in the runqueue doesn't really tell you anything
about how much CPU you are using.
Having said that, I think there might be a problem to be solved.
Bert
--
http://www.PowerDNS.com Open source, database driven DNS Software
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next prev parent reply other threads:[~2006-05-06 23:03 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-05 17:10 High load average on disk I/O on 2.6.17-rc3 Jason Schoonover
2006-05-06 23:03 ` bert hubert [this message]
2006-05-07 1:02 ` Jason Schoonover
2006-05-07 10:54 ` bert hubert
2006-05-07 16:50 ` Andrew Morton
2006-05-07 17:24 ` Jason Schoonover
2006-05-08 11:13 ` Erik Mouw
2006-05-08 11:22 ` Arjan van de Ven
2006-05-08 11:28 ` Russell King
2006-05-08 11:38 ` Avi Kivity
2006-05-08 12:37 ` Arjan van de Ven
2006-05-09 14:37 ` Bill Davidsen
2006-05-08 14:24 ` Martin J. Bligh
2006-05-08 14:55 ` Arjan van de Ven
2006-05-08 15:22 ` Erik Mouw
2006-05-08 15:25 ` Martin J. Bligh
2006-05-08 15:31 ` Arjan van de Ven
2006-05-08 15:42 ` Erik Mouw
2006-05-08 16:02 ` Martin J. Bligh
2006-05-08 16:02 ` Miquel van Smoorenburg
2006-05-08 16:47 ` Russell King
2006-05-08 17:04 ` Gabor Gombas
2006-05-08 17:18 ` Mike Galbraith
2006-05-09 1:57 ` Nick Piggin
2006-05-09 2:02 ` Martin Bligh
2006-05-09 2:16 ` Nick Piggin
2006-05-09 4:36 ` Arjan van de Ven
2006-05-09 4:46 ` Nick Piggin
2006-05-09 5:27 ` Hua Zhong
2006-05-09 5:03 ` David Lang
2006-05-15 7:46 ` Sander
2006-05-08 22:24 ` Bernd Eckenfels
2006-05-08 22:39 ` Lee Revell
2006-05-09 0:08 ` Peter Williams
2006-05-09 18:33 ` Bill Davidsen
-- strict thread matches above, loose matches on Subject: below --
2006-05-05 17:58 Jason Schoonover
[not found] <69c8K-3Bu-57@gated-at.bofh.it>
2006-05-05 23:12 ` Robert Hancock
2006-05-06 4:39 ` Jason Schoonover
2006-05-06 17:20 ` Robert Hancock
2006-05-06 18:23 ` Jason Schoonover
2006-05-06 20:01 ` Robert Hancock
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