From: Chris Mason <mason@suse.com>
To: Jens Axboe <axboe@suse.de>
Cc: Carl-Daniel Hailfinger <c-d.hailfinger.kernel.2003@gmx.net>,
Marc-Christian Petersen <m.c.p@wolk-project.de>,
Andrew Morton <akpm@digeo.com>,
kernel@kolivas.org, matthias.mueller@rz.uni-karlsruhe.de,
manish@storadinc.com, andrea@suse.de, marcelo@conectiva.com.br,
linux-kernel@vger.kernel.org
Subject: Re: 2.4.20: Proccess stuck in __lock_page ...
Date: 28 May 2003 10:28:17 -0400 [thread overview]
Message-ID: <1054132096.32362.120.camel@tiny.suse.com> (raw)
In-Reply-To: <20030528130839.GW845@suse.de>
On Wed, 2003-05-28 at 09:08, Jens Axboe wrote:
>
> > > May I ask how you are reproducing the bad results? I'm trying in vain
> > > here...
> >
> > Quoting Con Kolivas:
> >
> > dd if=/dev/zero of=dump bs=4096 count=512000
>
> already tried that, no go. on ide/scsi? what filesystem? how much ram?
> anything else running? smp/up?
I think we've got a few different problems. On SMP boxes, you need to
have the fix-pausing patch from andrea applied to catch all the corner
cases.
On UP boxes it's possible the requests are starving in the drive, SCSI
users should try with the max tags set down to something sensible,
between 8 and 32.
IDE people can try lowering the max_kb_per_request paramater in
/proc/ide/<drive>/settings, but this should only affect starvation with
the writeback cache on.
I made a patch a while ago that timed how long people spent waiting in
__get_request_wait, it might help us figure out where the starvation is
really happening.
-chris
next prev parent reply other threads:[~2003-05-28 15:05 UTC|newest]
Thread overview: 142+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-27 3:41 2.4.20: Proccess stuck in __lock_page manish
2003-05-27 4:03 ` Marcelo Tosatti
2003-05-27 4:25 ` manish
2003-05-27 4:59 ` Marcelo Tosatti
2003-05-27 15:29 ` manish
2003-05-27 16:59 ` Marcelo Tosatti
2003-05-27 4:31 ` manish
2003-05-27 14:14 ` Carl-Daniel Hailfinger
2003-05-27 14:28 ` William Lee Irwin III
2003-05-27 17:27 ` Marcelo Tosatti
2003-05-27 17:36 ` Marc-Christian Petersen
2003-05-27 17:47 ` Marcelo Tosatti
2003-05-27 17:52 ` Marc-Christian Petersen
2003-05-27 17:57 ` Marcelo Tosatti
2003-05-27 18:08 ` Marc-Christian Petersen
2003-05-27 18:25 ` Andrea Arcangeli
2003-05-27 18:33 ` Marcelo Tosatti
2003-05-27 18:39 ` Marc-Christian Petersen
2003-05-27 19:00 ` manish
2003-05-27 19:01 ` Marcelo Tosatti
2003-05-27 19:09 ` manish
2003-05-27 19:12 ` manish
2003-05-27 19:28 ` Marcelo Tosatti
2003-05-27 19:34 ` manish
2003-05-27 20:20 ` Andrea Arcangeli
2003-05-27 20:25 ` Marc-Christian Petersen
2003-05-27 20:42 ` manish
2003-05-27 20:47 ` Andrea Arcangeli
2003-05-27 20:50 ` manish
2003-05-27 21:05 ` Andrea Arcangeli
2003-05-27 20:03 ` Andrea Arcangeli
2003-05-27 20:08 ` Marcelo Tosatti
2003-05-27 20:25 ` Andrea Arcangeli
2003-05-27 22:18 ` Andrew Morton
2003-05-27 22:38 ` Andrea Arcangeli
2003-05-27 22:40 ` Andrew Morton
2003-05-27 22:58 ` Andrea Arcangeli
2003-05-27 20:08 ` Chris Mason
2003-05-27 18:35 ` Marc-Christian Petersen
2003-05-27 20:10 ` Andrea Arcangeli
2003-05-27 20:24 ` Marc-Christian Petersen
2003-05-27 20:45 ` Andrea Arcangeli
2003-05-27 20:53 ` Marc-Christian Petersen
2003-05-27 21:00 ` Jens Axboe
2003-05-27 21:11 ` Marc-Christian Petersen
2003-05-27 21:19 ` Jens Axboe
2003-05-27 20:55 ` Jens Axboe
2003-05-27 21:05 ` William Lee Irwin III
2003-05-27 21:18 ` Jens Axboe
2003-05-27 21:33 ` Andrea Arcangeli
2003-05-27 18:09 ` manish
2003-05-27 17:53 ` manish
2003-05-27 18:01 ` Marc-Christian Petersen
2003-05-27 18:16 ` Marcelo Tosatti
2003-05-27 18:25 ` Marc-Christian Petersen
2003-05-27 18:12 ` Matthias Mueller
2003-05-27 17:36 ` William Lee Irwin III
2003-05-27 17:38 ` Carl-Daniel Hailfinger
2003-05-27 17:50 ` manish
2003-05-27 18:04 ` Marc-Christian Petersen
2003-05-27 23:06 ` Georg Nikodym
2003-05-27 23:26 ` Christopher S. Aker
2003-05-28 5:33 ` Con Kolivas
2003-05-28 6:04 ` Jens Axboe
2003-05-28 7:13 ` Con Kolivas
2003-05-28 7:13 ` Jens Axboe
2003-05-28 7:32 ` Marc-Christian Petersen
2003-05-28 7:35 ` Jens Axboe
2003-05-28 7:51 ` Andrew Morton
2003-05-28 8:30 ` Jens Axboe
2003-05-28 8:43 ` Marc-Christian Petersen
2003-05-28 8:40 ` Marc-Christian Petersen
2003-05-28 10:13 ` Matthias Mueller
2003-05-28 10:18 ` Jens Axboe
2003-05-28 10:23 ` Andrew Morton
2003-05-28 10:25 ` Jens Axboe
2003-05-28 10:48 ` Con Kolivas
2003-05-28 10:50 ` Jens Axboe
2003-05-28 10:59 ` Andrew Morton
2003-05-28 11:17 ` Marc-Christian Petersen
2003-05-28 11:27 ` Andrew Morton
2003-05-28 11:31 ` Marc-Christian Petersen
2003-05-28 12:53 ` Jens Axboe
2003-05-28 12:58 ` Matthias Mueller
2003-05-28 13:07 ` Carl-Daniel Hailfinger
2003-05-28 13:08 ` Jens Axboe
2003-05-28 13:16 ` Matthias Mueller
2003-05-28 13:21 ` Con Kolivas
2003-05-28 13:30 ` Carl-Daniel Hailfinger
2003-05-28 13:33 ` Con Kolivas
2003-05-28 13:27 ` Stefan Foerster
2003-05-28 13:37 ` Stefan Foerster
2003-05-28 14:28 ` Chris Mason [this message]
2003-05-28 14:33 ` Jens Axboe
2003-05-28 14:58 ` Chris Mason
2003-05-28 15:39 ` Jens Axboe
2003-05-28 23:38 ` Chris Mason
2003-05-28 13:25 ` Stefan Foerster
2003-05-28 18:19 ` Zwane Mwaikambo
2003-05-28 18:32 ` Zwane Mwaikambo
2003-05-28 18:47 ` Elladan
2003-05-28 23:03 ` Con Kolivas
2003-05-29 13:09 ` Andrea Arcangeli
2003-05-29 15:04 ` Con Kolivas
2003-05-29 16:23 ` Marc-Christian Petersen
2003-05-28 11:41 ` Con Kolivas
2003-05-29 12:52 ` Andrea Arcangeli
2003-05-28 11:03 ` Nick Piggin
2003-05-28 10:29 ` Con Kolivas
2003-05-28 10:29 ` Marc-Christian Petersen
2003-05-28 12:10 ` Matthias Mueller
2003-05-28 12:14 ` Matthias Mueller
2003-05-28 12:21 ` Carl-Daniel Hailfinger
2003-05-28 12:23 ` Matthias Mueller
2003-05-28 12:28 ` Carl-Daniel Hailfinger
2003-05-28 12:38 ` Matthias Mueller
2003-05-29 13:19 ` Andrea Arcangeli
2003-05-29 14:10 ` Matthias Mueller
2003-05-29 16:22 ` Andrea Arcangeli
2003-05-28 14:00 ` Con Kolivas
2003-05-29 13:24 ` Andrea Arcangeli
2003-05-29 13:55 ` Willy Tarreau
2003-05-29 14:09 ` Con Kolivas
2003-05-29 14:38 ` Matthias Mueller
2003-05-29 16:10 ` Willy TARREAU
2003-05-29 14:45 ` Marc-Christian Petersen
2003-05-29 16:06 ` Willy TARREAU
2003-05-29 16:49 ` Andrea Arcangeli
2003-05-29 17:46 ` Willy Tarreau
2003-05-29 16:19 ` Andrea Arcangeli
2003-05-29 1:32 ` manish
2003-05-28 10:24 ` Marc-Christian Petersen
2003-05-28 7:16 ` Marc Wilson
2003-05-28 19:53 ` David Ford
2003-05-28 9:36 ` Ragnar Hojland Espinosa
2003-05-28 9:45 ` Jens Axboe
2003-05-28 9:53 ` Marc-Christian Petersen
2003-05-28 10:01 ` Jens Axboe
2003-05-28 10:58 ` Alan Cox
2003-05-29 8:34 ` Ragnar Hojland Espinosa
[not found] <20030527035006$5339@gated-at.bofh.it>
[not found] ` <20030527175008$3573@gated-at.bofh.it>
[not found] ` <20030527180016$418c@gated-at.bofh.it>
[not found] ` <20030527182011$4acb@gated-at.bofh.it>
[not found] ` <20030528094008$1500@gated-at.bofh.it>
[not found] ` <20030528095014$7b21@gated-at.bofh.it>
2003-05-28 18:55 ` Thomas Tonino
2003-06-02 10:43 ` Jens Axboe
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