From: Arjan van de Ven <arjan@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>,
linux-kernel@vger.kernel.org, Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority
Date: Thu, 2 Oct 2008 06:12:36 -0700 [thread overview]
Message-ID: <20081002061236.3c71c877@infradead.org> (raw)
In-Reply-To: <20081001235501.2b7f50fe.akpm@linux-foundation.org>
On Wed, 1 Oct 2008 23:55:01 -0700
>
> I've forgotten where that code is now, but I don't think it was ever
> revisited. It should be.
>
> So. Where are these atime updaters getting blocked?
my reproducer is sadly very simple (claws-mail is my mail client that uses maildir)
Process claws-mail (4896) Total: 2829.7 msec
EXT3: Waiting for journal access 2491.0 msec 88.4 %
Writing back inodes 160.9 msec 5.7 %
synchronous write 78.8 msec 3.0 %
is an example of such a trace (this is with patch, without patch the numbers are about 3x bigger)
Waiting for journal access is "journal_get_write_access"
Writing back inodes is "writeback_inodes"
synchronous write is "do_sync_write"
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2008-10-02 13:13 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-02 3:00 [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority Arjan van de Ven
2008-10-02 4:56 ` Andrew Morton
2008-10-02 6:27 ` Jens Axboe
2008-10-02 6:55 ` Andrew Morton
2008-10-02 7:45 ` Jens Axboe
2008-10-02 8:03 ` Andrew Morton
2008-10-02 8:22 ` Jens Axboe
2008-10-02 8:43 ` Andrew Morton
2008-10-02 8:46 ` Jens Axboe
2008-10-02 12:04 ` Theodore Tso
2008-10-02 13:16 ` Arjan van de Ven
2008-10-02 13:46 ` Theodore Tso
2008-10-02 14:33 ` Arjan van de Ven
2008-10-04 14:12 ` Theodore Tso
2008-10-04 17:14 ` Joseph Fannin
2008-10-04 21:27 ` Theodore Tso
2008-10-02 13:12 ` Arjan van de Ven [this message]
2008-10-02 20:24 ` Andrew Morton
2008-10-03 4:01 ` Arjan van de Ven
2008-10-03 4:23 ` Arjan van de Ven
2008-10-03 4:40 ` Andrew Morton
2008-10-03 4:43 ` Arjan van de Ven
2008-10-03 4:50 ` Andrew Morton
2008-10-03 5:00 ` Arjan van de Ven
2008-10-03 5:24 ` Andrew Morton
2008-10-03 17:21 ` Arjan van de Ven
2008-10-09 3:00 ` Theodore Tso
2008-10-09 3:38 ` Andrew Morton
2008-10-03 4:45 ` Arjan van de Ven
2008-10-02 6:57 ` Andi Kleen
2008-10-02 7:55 ` Jens Axboe
2008-10-02 9:33 ` Dave Chinner
2008-10-02 9:45 ` Jens Axboe
2008-10-02 13:14 ` Arjan van de Ven
2008-10-02 13:27 ` Jens Axboe
2008-10-02 13:36 ` Arjan van de Ven
2008-10-02 13:47 ` Jens Axboe
2008-10-02 14:26 ` Arjan van de Ven
2008-10-02 16:42 ` Jens Axboe
2008-10-02 19:04 ` Arjan van de Ven
2008-10-02 19:22 ` Jens Axboe
2008-10-02 21:37 ` Andrew Morton
2008-10-02 23:58 ` Dave Chinner
2008-10-03 0:06 ` Andrew Morton
2008-10-03 0:20 ` Andrew Morton
2008-10-02 13:05 ` Arjan van de Ven
2008-10-02 17:11 ` Jens Axboe
[not found] <bimJN-4cO-5@gated-at.bofh.it>
[not found] ` <biosl-6bq-9@gated-at.bofh.it>
[not found] ` <biqkw-aK-3@gated-at.bofh.it>
[not found] ` <birgx-1pQ-9@gated-at.bofh.it>
[not found] ` <bisPe-3xx-9@gated-at.bofh.it>
[not found] ` <bisYW-3HQ-13@gated-at.bofh.it>
2008-10-02 15:32 ` Bodo Eggert
2008-10-02 23:34 ` Dave Chinner
2008-10-04 7:45 ` Aaron Carroll
2008-10-06 3:18 ` Dave Chinner
2008-10-07 18:06 ` Jens Axboe
2008-10-07 22:22 ` Dave Chinner
2008-10-09 8:48 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2007-10-15 17:46 [patch] " Arjan van de Ven
2007-10-15 18:47 ` Andrew Morton
2007-10-15 19:28 ` Jens Axboe
2007-10-22 9:10 ` Ingo Molnar
2007-10-22 9:23 ` Andrew Morton
2007-10-22 9:27 ` Ingo Molnar
2007-10-22 9:40 ` Ingo Molnar
2007-10-22 9:49 ` Andrew Morton
2007-10-15 20:13 ` Rik van Riel
2007-10-15 21:12 ` Andrew Morton
[not found] ` <473B18BA.5000709@hp.com>
2007-11-14 17:14 ` Andrew Morton
2007-11-14 17:18 ` Ingo Molnar
2007-11-14 17:51 ` Arjan van de Ven
2007-11-14 18:55 ` Ingo Molnar
2007-11-14 19:43 ` Alan D. Brunelle
2007-11-14 19:24 ` Alan D. Brunelle
2007-11-14 19:50 ` Arjan van de Ven
2007-11-14 19:56 ` Alan D. Brunelle
2007-11-16 16:25 ` Alan D. Brunelle
2007-11-16 16:40 ` Alan D. Brunelle
2007-11-16 18:35 ` Ray Lee
2007-11-16 18:39 ` Alan D. Brunelle
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