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From: Christoph Litauer <litauer@uni-koblenz.de>
To: Emmanuel Florac <eflorac@intellique.com>
Cc: xfs@oss.sgi.com
Subject: Re: Performance problems with millions of inodes
Date: Thu, 26 Jun 2008 13:29:42 +0200	[thread overview]
Message-ID: <48637DA6.8040300@uni-koblenz.de> (raw)
In-Reply-To: <20080625180222.12885793@harpe.intellique.com>

Emmanuel Florac schrieb:
> Le Wed, 25 Jun 2008 16:46:30 +0200
> Christoph Litauer <litauer@uni-koblenz.de> écrivait:
> 
>>> Maybe the 143 million inodes cause this effect? Any idea how to
>>> avoid it? 
> 
> Maybe you should try to add a "nobarrier" option at mount on the
> slowest machine. Barriers can slow down operation tremendously...
> 

Thanks for this hint. nobarrier improved file creation performance 
significantly (about 50 times).

-- 
Regards
Christoph
________________________________________________________________________
Christoph Litauer                  litauer@uni-koblenz.de
Uni Koblenz, Computing Center,     http://www.uni-koblenz.de/~litauer
Postfach 201602, 56016 Koblenz     Fon: +49 261 287-1311, Fax: -100 1311
PGP-Fingerprint: F39C E314 2650 650D 8092 9514 3A56 FBD8 79E3 27B2

  parent reply	other threads:[~2008-06-26 11:28 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-25 14:43 Performance problems with millions of inodes Christoph Litauer
2008-06-25 14:46 ` Christoph Litauer
2008-06-25 16:02   ` Emmanuel Florac
2008-06-25 17:00     ` Mark
2008-06-26 11:29     ` Christoph Litauer [this message]
2008-06-25 23:12 ` Dave Chinner
2008-06-26  7:29   ` Christoph Litauer

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