From: Peter Williams <pwil3058@bigpond.net.au>
To: linux-kernel@vger.kernel.org
Subject: Re: High load average on disk I/O on 2.6.17-rc3
Date: Tue, 09 May 2006 10:08:08 +1000 [thread overview]
Message-ID: <445FDD68.20703@bigpond.net.au> (raw)
In-Reply-To: <E1FdE9I-00058a-00@calista.inka.de>
Bernd Eckenfels wrote:
> Erik Mouw <erik@harddisk-recovery.com> wrote:
>> ... except that any kernel < 2.6 didn't account tasks waiting for disk
>> IO. Load average has always been somewhat related to tasks contending
>> for CPU power.
>
> Actually all Linux kernels accounted for diskwaits and others like BSD based
> not. It is a very old linux oddness.
Personally, I see both types of load estimates (i.e. CPU only and CPU
plus IO wait) as useful. Why can't we have both? The cost would be
minimal.
Peter
--
Peter Williams pwil3058@bigpond.net.au
"Learning, n. The kind of ignorance distinguishing the studious."
-- Ambrose Bierce
next prev parent reply other threads:[~2006-05-09 0:08 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
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 [this message]
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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