From: Andrew Perepechko <anserper@yandex.ru>
To: linux-fsdevel@vger.kernel.org
Subject: quota: dqio_mutex design
Date: Thu, 02 Feb 2017 15:23:44 +0300 [thread overview]
Message-ID: <10928956.Fla3vXZ7d9@panda> (raw)
Hello!
We have a heavy metadata related workload (ext4, quota journalling)
and profiling shows that there's significant dqio_mutex contention.
>From the quota code, it looks like every time dqio_mutex is taken
it protects access to only one quota file.
Is it possible to split dqio_mutex for each of MAXQUOTAS so that
e.g. 2 parallel dquot_commit()'s can be running for user and group
quota update? Am I missing any dqio_mutex function that requires
dqio_mutex to be monolithic?
Thank you,
Andrew
next reply other threads:[~2017-02-02 12:31 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-02 12:23 Andrew Perepechko [this message]
2017-03-03 10:08 ` quota: dqio_mutex design Jan Kara
2017-03-09 22:29 ` Andrew Perepechko
2017-03-13 8:44 ` Jan Kara
2017-06-21 10:52 ` Jan Kara
[not found] ` <4181747.CBilgxvOab@panda>
2017-08-01 13:02 ` Jan Kara
2017-08-02 16:25 ` Jan Kara
2017-08-02 17:52 ` Andrew Perepechko
2017-08-03 11:09 ` Jan Kara
2017-08-03 11:31 ` Wang Shilong
2017-08-03 12:24 ` Andrew Perepechko
2017-08-03 13:19 ` Wang Shilong
2017-08-03 13:41 ` Andrew Perepechko
2017-08-03 13:55 ` Andrew Perepechko
2017-08-03 14:23 ` Jan Kara
2017-08-03 14:36 ` Jan Kara
2017-08-03 14:39 ` Wang Shilong
2017-08-08 16:06 ` Jan Kara
2017-08-14 3:24 ` Wang Shilong
2017-08-14 3:28 ` Wang Shilong
2017-08-14 3:53 ` Wang Shilong
2017-08-14 8:22 ` Jan Kara
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