From: Jesse Stroik <jstroik@ssec.wisc.edu>
To: Emmanuel Florac <eflorac@intellique.com>
Cc: Linux XFS <xfs@oss.sgi.com>
Subject: Re: Improving XFS file system inode performance
Date: Mon, 22 Nov 2010 16:32:06 -0600 [thread overview]
Message-ID: <4CEAEF66.7030708@ssec.wisc.edu> (raw)
In-Reply-To: <20101122232528.21b78a9e@galadriel.home>
On 11/22/2010 04:25 PM, Emmanuel Florac wrote:
> Le Mon, 22 Nov 2010 15:59:51 -0600 vous écriviez:
>
>> Performance was fine before the file system was filled -- last week
>> ~8TB showed up and filled the 20TB file system. Since, it has been
>> performing poorly.
>
> Maybe it got fragmented? How does fragmentation look like?
I wasn't able to resolve this in reasonable time. Part of the issue is
that we're dealing with files within about 100k directories. I'll
attempt to get the fragmentation numbers overnight.
I suspect the regularly listed set of files on this fs exceeds the inode
cache. Where can I determine the cache misses and tune the file system?
Best,
Jesse
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next prev parent reply other threads:[~2010-11-22 22:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-22 21:59 Improving XFS file system inode performance Jesse Stroik
2010-11-22 22:25 ` Emmanuel Florac
2010-11-22 22:32 ` Jesse Stroik [this message]
2010-11-22 23:44 ` Dave Chinner
2010-11-23 14:49 ` Jesse Stroik
2010-11-23 20:27 ` Dave Chinner
2010-11-23 20:27 ` Michael Monnerie
2010-11-23 20:39 ` Dave Chinner
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