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From: Jens Axboe <jens.axboe@oracle.com>
To: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: Ingo Molnar <mingo@elte.hu>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Mike Galbraith <efault@gmx.de>,
	LKML <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS  is under heavy write load (massive starvation)
Date: Mon, 30 Apr 2007 08:57:19 +0200	[thread overview]
Message-ID: <20070430065719.GD21015@kernel.dk> (raw)
In-Reply-To: <Pine.LNX.4.64.0704281909320.14529@artax.karlin.mff.cuni.cz>

On Sat, Apr 28 2007, Mikulas Patocka wrote:
> >So perhaps if there's any privileged reads going on then we should limit
> >writes to a depth of 2 at most, with some timeout mechanism that would
> 
> SCSI has a "high priority" bit in the command block, so you can just set 
> it --- but I am not sure how well do disks support it.

I'd be surprised if it was useful.

-- 
Jens Axboe


  reply	other threads:[~2007-04-30  7:01 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-27  7:59 [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS is under heavy write load (massive starvation) Mike Galbraith
2007-04-27  8:33 ` Andrew Morton
2007-04-27  9:23   ` Mike Galbraith
2007-04-27 10:17   ` Mike Galbraith
2007-04-27 11:59   ` Marat Buharov
2007-04-27 12:30     ` Peter Zijlstra
2007-04-27 13:50       ` Mark Lord
2007-04-27 12:39     ` Manoj Joseph
2007-04-27 15:30     ` Linus Torvalds
2007-04-27 19:31       ` Andreas Dilger
2007-04-27 19:44         ` Mike Galbraith
2007-04-27 19:50         ` Linus Torvalds
2007-04-27 20:05           ` Hua Zhong
2007-04-27 20:12           ` Miquel van Smoorenburg
2007-04-27 20:12           ` Bill Huey
2007-04-28  5:37             ` Mikulas Patocka
2007-04-28  5:45               ` Mikulas Patocka
2007-04-28 21:57               ` Bill Huey
2007-04-28 22:38                 ` Mikulas Patocka
2007-04-27 20:29           ` Gabriel C
2007-04-27 20:45           ` Stephen Clark
2007-04-27 20:54           ` Manoj Joseph
2007-04-28  8:45           ` Matthias Andree
2007-04-27 22:18         ` Andrew Morton
2007-05-03 17:38           ` Alex Tomas
2007-05-03 23:54             ` Andrew Morton
2007-05-04  6:18               ` Alex Tomas
2007-05-04  6:38                 ` Andrew Morton
2007-05-04  6:57                   ` Alex Tomas
2007-05-04  7:18                     ` Andrew Morton
2007-05-04  7:39                       ` Alex Tomas
2007-05-04  8:02                         ` Andrew Morton
2007-04-28  8:44       ` Matthias Andree
2007-04-28 20:46   ` Mikulas Patocka
2007-04-28 21:12     ` Lee Revell
2007-04-29 20:49       ` Mark Lord
2007-04-29 21:17       ` Mikulas Patocka
2007-04-27 15:18 ` Linus Torvalds
2007-04-27 15:41   ` John Anthony Kazos Jr.
2007-04-27 15:54     ` Linus Torvalds
2007-04-27 16:24       ` Chuck Ebbert
2007-04-27 19:43       ` Marko Macek
2007-04-27 18:31   ` Andrew Morton
2007-04-27 19:09     ` Zan Lynx
2007-04-27 22:07       ` Andrew Morton
2007-04-27 19:27     ` Mike Galbraith
2007-04-28  8:51     ` Matthias Andree
2007-04-28  8:59       ` Andrew Morton
2007-04-28 16:30       ` Linus Torvalds
2007-04-28 16:56         ` Paolo Ornati
2007-04-27 19:28   ` Mike Galbraith
2007-04-27 20:06   ` Jan Engelhardt
2007-04-27 21:22     ` Linus Torvalds
2007-04-28  4:25   ` Mike Galbraith
2007-04-28  6:32     ` Mike Galbraith
2007-04-28  7:01       ` Andrew Morton
2007-04-28  7:12         ` Mike Galbraith
2007-04-28  6:32   ` Mikulas Patocka
2007-04-28 16:05     ` Linus Torvalds
2007-04-28 16:37       ` Ingo Molnar
2007-04-28 17:11         ` Mikulas Patocka
2007-04-30  6:57           ` Jens Axboe [this message]
2007-04-28 17:55       ` Mikulas Patocka
2007-04-30  6:56       ` Jens Axboe
2007-05-02  6:53   ` Jens Axboe
2007-05-02  7:36     ` Mike Galbraith

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