From: Avi Kivity <avi@argo.co.il>
To: "Dieter Stüken" <stueken@conterra.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ext3 metadata performace
Date: Thu, 11 May 2006 18:43:36 +0300 [thread overview]
Message-ID: <44635BA8.9060002@argo.co.il> (raw)
In-Reply-To: <4463461C.3070201@conterra.de>
Dieter Stüken wrote:
> after I switched from from ext2 to ext3 i observed some severe
> performance degradation. Most discussion about this topic deals
> with tuning of data-io performance. My problem however is related to
> metadata updates. When cloning (cp -al) or deleting directory trees I
> find, that about 7200 files are created/deleted per minute. Seems
> this is related to some ex3 strategy, to wait for each metadata to be
> written to disk. Interestingly this occurs with my new hw-raid
> controller (3ware 9500S), which even has an battery buffered disk cache.
> Thus there is no need for synchronous IO anyway. If I disable the
> disk cache on my plain SATA disk using ext3, I also get this behavior.
>
Try increasing the journal size (mkfs -t ext3 -J size=20000) and see if
that improves things.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2006-05-11 15:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-11 14:11 ext3 metadata performace Dieter Stüken
2006-05-11 15:43 ` Avi Kivity [this message]
2006-05-11 18:46 ` Miquel van Smoorenburg
2006-05-12 0:36 ` Hua Zhong
2006-05-12 6:35 ` Helge Hafting
2006-05-12 10:11 ` Dieter Stüken
[not found] <6bkbC-4V9-27@gated-at.bofh.it>
2006-05-12 0:12 ` Robert Hancock
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