[Ocfs2-users] degrading performance

[Sunil Mushran]

The inode locality patches were added to resolve that performance  
issue. That was in 2.6.30, iirc.

On Sep 19, 2009, at 9:41 PM, will <whansard at sbcglobal.net> wrote:

> I've been playing with ocfs2 in local mode, and was really suprised
> how fast it was.  I was playing with extracting a linux distribution
> on my hardrive that was tar gzipped (GZIP=-1) and extracting it onto
> a different hard drive.
> This was with kernel 2.6.28.
> ocfs2-5m6s
> reiser4-4m19s
> reiser3-6m38
> jfs-8m18s
> ext2-4m7s
> ext3-7m18s
> xfs-6m29s
> ext4m55s
>
> I noticed the delete times were very slow with ocfs2, like xfs is if
> you don't add the extra buffers at mount time.  Also when I deleted
> all the files on the ocfs2 partition, I don't get all the space back.
> Like maybe a little more than a gig is showing used, but no files.
> but here's the weird part.  I only got the good speed with ocfs2 on
> the first write.  If I deleted all the files on that partition, then
> extracted the tar file again, the time went up to 8 minutes.  I  
> deleted
> them all again, then unmounted and fsck'ed the partition, then mounted
> and extracted the tarfile for the third time, and it took 19 minutes.
> hope this may help a little.
>
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