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From: Andi Kleen <andi@firstfloor.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@infradead.org>,
	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, 02 Oct 2008 08:57:24 +0200	[thread overview]
Message-ID: <87fxnfpjqj.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20081001215638.3a65134c.akpm@linux-foundation.org> (Andrew Morton's message of "Wed, 1 Oct 2008 21:56:38 -0700")

Andrew Morton <akpm@linux-foundation.org> writes:

> On Wed, 1 Oct 2008 20:00:34 -0700 Arjan van de Ven <arjan@infradead.org> wrote:
>
>> Subject: [PATCH] Give kjournald a IOPRIO_CLASS_RT io priority
>
> You proposed this a while back and it didn't happen and I forget
> why and the changelog doesn't mention any of that?

XFS tried this some time ago too.

I think the issue was that real user supplied RT applications don't want to 
compete with a "pseudo RT" kjournald.

So it would really need a new priority class between RT and normal priority.

-Andi

-- 
ak@linux.intel.com

  parent reply	other threads:[~2008-10-02  6:57 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
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 [this message]
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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