From: Erkki Seppala <flux-btrfs@inside.org>
To: linux-btrfs@vger.kernel.org
Subject: Re: Very slow filesystem
Date: Thu, 05 Jun 2014 11:08:00 +0300 [thread overview]
Message-ID: <m498upbhj8f.fsf@coffee.modeemi.fi> (raw)
In-Reply-To: CAEezp7uMXA3t8-GDVcVzx9An+hPBZmynYZ-wUXzhJuP93czs1w@mail.gmail.com
Igor M <igork20@gmail.com> writes:
> Why btrfs becames EXTREMELY slow after some time (months) of usage ?
Have you tried iostat from sysstat to see the number of IO-operations
performed per second (tps) on the devices when it is performing badly?
If the number is hitting your seek rate (ie. 1/0.0075 for 7.5 ms seek =
133), then fragmentation is sure to be blamed.
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next prev parent reply other threads:[~2014-06-05 8:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-04 22:15 Very slow filesystem Igor M
2014-06-04 22:27 ` Fajar A. Nugraha
2014-06-04 22:40 ` Roman Mamedov
2014-06-04 22:45 ` Igor M
2014-06-04 23:17 ` Timofey Titovets
2014-06-05 3:05 ` Duncan
2014-06-05 3:22 ` Fajar A. Nugraha
2014-06-05 4:45 ` Duncan
2014-06-05 7:50 ` Igor M
2014-06-05 10:54 ` Russell Coker
2014-06-05 15:52 ` Igor M
2014-06-05 16:13 ` Timofey Titovets
2014-06-05 19:53 ` Duncan
2014-06-06 19:06 ` Mitch Harder
2014-06-06 19:59 ` Duncan
2014-06-07 2:29 ` Russell Coker
2014-06-05 8:08 ` Erkki Seppala [this message]
2014-06-05 8:12 ` Erkki Seppala
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