From: Jens Axboe <axboe@suse.de>
To: Matthias Dahl <mlkernel@mortal-soul.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: sluggish system responsiveness under higher IO load
Date: Thu, 10 Aug 2006 14:28:53 +0200 [thread overview]
Message-ID: <20060810122853.GS11829@suse.de> (raw)
In-Reply-To: <20060808190241.GB11829@suse.de>
On Tue, Aug 08 2006, Jens Axboe wrote:
> On Tue, Aug 08 2006, Matthias Dahl wrote:
> > > Can you see if this makes any difference whatsoever?
> >
> > Sorry but no change for the better with this patch.
> >
> > Are there any more informations I can provide to help?
>
> Ok, it was worth a shot. I got another report that the patch fixes this
> behaviour, so maybe we are dealing with two seperate issues. It would be
> nice if you could gather vmstat 1 info during a problematic period.
> blktrace info could also be very useful:
>
> http://brick.kernel.dk/snaps/blktrace-git-20060807122505.tar.gz
Some more things to try/questions:
- Did 2.6.16 work well for you?
- Does disabling preemtion (CONFIG_PREEMPT_NONE=y) help?
--
Jens Axboe
next prev parent reply other threads:[~2006-08-10 12:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-06 10:00 sluggish system responsiveness under higher IO load Matthias Dahl
2006-08-06 10:15 ` Andrew Morton
2006-08-06 13:54 ` Matthias Dahl
2006-08-06 19:37 ` Andrew Morton
2006-08-08 15:47 ` Matthias Dahl
2006-08-07 13:48 ` Jens Axboe
2006-08-08 15:56 ` Matthias Dahl
2006-08-08 17:44 ` Matthias Dahl
2006-08-08 19:02 ` Jens Axboe
2006-08-10 12:28 ` Jens Axboe [this message]
2006-08-11 11:40 ` Matthias Dahl
2006-08-13 16:15 ` Matthias Dahl
2006-10-06 15:58 ` Paolo Ornati
2006-10-08 14:28 ` Christian
2006-10-08 17:05 ` Jens Axboe
2006-10-08 23:50 ` Jesper Juhl
2006-10-09 5:58 ` Jens Axboe
2006-10-14 14:39 ` Matthias Dahl
2006-10-14 14:57 ` Paolo Ornati
2006-10-14 18:20 ` Mike Galbraith
2006-09-03 11:15 ` Matthias Dahl
2006-09-15 18:17 ` Jens Axboe
2006-09-24 14:32 ` Matthias Dahl
2006-09-24 20:27 ` Mike Galbraith
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