From: Roger Larsson <roger.larsson@skelleftea.mail.telia.com>
To: Torben Frey <kernel@mailsammler.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Horrible drive performance under concurrent i/o jobs (dlh problem?)
Date: Fri, 20 Dec 2002 15:27:16 +0100 [thread overview]
Message-ID: <200212201527.16812.roger.larsson@skelleftea.mail.telia.com> (raw)
In-Reply-To: <3E01D7D7.2070201@mailsammler.de>
On Thursday 19 December 2002 15:29, Torben Frey wrote:
> 2 0 4 25292 2292 72056 759548 0 0 30404 20084 820 1149 4 85 11
> 0 1 3 25292 2828 72048 759012 0 0 40716 23772 845 1307 2 62 36
> 0 1 2 25292 3208 72280 758372 0 0 0 16532 573 231 6 13 81
> 1 0 2 25292 3216 72276 758404 0 0 4880 23800 530 264 2 10 88
>
Hmm... No process running but still lots of CPU used.
Are you sure that you run the disks with DMA?
You should also try to take a profile of a run.
(see
man readprofile
and
linux/Documentation/kernel-parameters.txt
profile=2 as a boot option should do)
/RogerL
--
Roger Larsson
Skellefteå
Sweden
next prev parent reply other threads:[~2002-12-20 14:22 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-19 14:29 Torben Frey
2002-12-20 1:47 ` Nuno Silva
2002-12-27 13:04 ` Torben Frey
2002-12-20 14:27 ` Roger Larsson [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-12-18 21:10 Con Kolivas
2002-12-18 22:16 ` Torben Frey
2002-12-18 22:37 ` Andrew Morton
2002-12-18 23:30 ` Torben Frey
2002-12-18 23:46 ` Andrew Morton
2002-12-18 22:40 ` Torben Frey
2002-12-18 19:06 Torben Frey
2002-12-20 20:40 ` Joseph D. Wagner
2002-12-20 22:25 ` David Lang
2002-12-21 6:00 ` Joseph D. Wagner
2002-12-23 1:29 ` David Lang
2002-12-24 9:18 ` Roy Sigurd Karlsbakk
2002-12-24 17:21 ` jw schultz
2002-12-24 21:00 ` Jeremy Fitzhardinge
2002-12-25 1:34 ` Rik van Riel
2002-12-25 2:02 ` jw schultz
2002-12-25 3:41 ` Barry K. Nathan
2002-12-23 17:48 ` Krzysztof Halasa
2002-12-23 18:13 ` Denis Vlasenko
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