Message-ID: <44635BA8.9060002@argo.co.il>
Date: Thu, 11 May 2006 18:43:36 +0300
From: Avi Kivity <avi@argo.co.il>
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To: =?ISO-8859-1?Q?Dieter_St=FCken?= <stueken@conterra.de>
CC: linux-kernel@vger.kernel.org
Subject: Re: ext3 metadata performace
References: <4463461C.3070201@conterra.de>
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Dieter St?ken 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

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