| To: | Emmanuel Florac <eflorac@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: Improving XFS file system inode performance |
| From: | Jesse Stroik <jstroik@xxxxxxxxxxxxx> |
| Date: | Mon, 22 Nov 2010 16:32:06 -0600 |
| Cc: | Linux XFS <xfs@xxxxxxxxxxx> |
| In-reply-to: | <20101122232528.21b78a9e@xxxxxxxxxxxxxx> |
| References: | <4CEAE7D7.6050401@xxxxxxxxxxxxx> <20101122232528.21b78a9e@xxxxxxxxxxxxxx> |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.12) Gecko/20101027 Lightning/1.0b2 Thunderbird/3.1.6 |
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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