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From: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
To: linux-xfs@vger.kernel.org
Subject: Which fragmentation factor is allowable for xfs (not impact on performance)?
Date: Sat, 6 Oct 2018 22:34:13 +0500	[thread overview]
Message-ID: <CABXGCsOxH-gfLL4Mo+RxNk4OoWgAdJzW2Sv2w2He7VkgKxqUug@mail.gmail.com> (raw)

Which fragmentation factor is allowable for xfs (not impact on performance)?

# xfs_db -c frag -r /dev/sda
actual 4908781, ideal 2801391, fragmentation factor 42.93%
Note, this number is largely meaningless.
Files on this filesystem average 1.75 extents per file

# mount | grep sda
/dev/sda on /home type xfs (rw,relatime,seclabel,attr2,inode64,noquota)

# df -h | grep sda
/dev/sda         11T  5.3T  5.7T  49% /home

I think it too much for partition which are half free.

It would also be interesting to see the fragmentation in the context
of files, but I have not found anywhere how to look at it.

Thanks.

--
Best Regards,
Mike Gavrilov.

             reply	other threads:[~2018-10-07  0:38 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-06 17:34 Mikhail Gavrilov [this message]
2018-10-06 21:20 ` Which fragmentation factor is allowable for xfs (not impact on performance)? Eric Sandeen
2018-10-09 17:33   ` Mikhail Gavrilov
2018-10-09 21:41     ` Dave Chinner

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