From: Nathan Scott <nathans@sgi.com>
To: Brad Fitzpatrick <brad@danga.com>, Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, lisa@danga.com,
marksmith@danga.com, linux-xfs@oss.sgi.com
Subject: Re: 2.6.9: unkillable processes during heavy IO
Date: Wed, 17 Nov 2004 15:55:06 +1100 [thread overview]
Message-ID: <20041117045506.GA1802@frodo> (raw)
In-Reply-To: <20041116200156.2b2526e5.akpm@osdl.org>
On Tue, Nov 16, 2004 at 08:01:56PM -0800, Andrew Morton wrote:
> Brad Fitzpatrick <brad@danga.com> wrote:
> >
> > Here is the information requested regarding the regular lockup we're
> > seeing (details in original post at bottom)
>
> yup, that looks like a locking tangle in the XFS direct-io code.
>
> Nathan, this is 2.6.9.
Hmmm, yeah, looks like it - bother.
> > On Sun, 14 Nov 2004, Brad Fitzpatrick wrote:
> >
> > > We have two database servers which freeze up during heavy IO load. The
Brad, could you send me details on how you've setup mysqld
and how to generate a load similar to yours, so that I can
reproduce the hang locally?
> > > The hardware/software stack is:
> > >
> > > - Dual Opteron 246, SMP kernel, w/ NUMA
> > > - 9 GB of memory (4GB in one zone, 5GB in the other)
> > > - MySQL, running mostly InnoDB, but some MyISAM
( I don't even know what those two things are, so you can
probably guess at the level of assistance I'll need here. :)
thanks!
--
Nathan
next prev parent reply other threads:[~2004-11-17 5:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-14 22:15 2.6.9: unkillable processes during heavy IO Brad Fitzpatrick
2004-11-14 21:41 ` Alan Cox
2004-11-14 22:30 ` Andrew Morton
2004-11-14 22:45 ` Andries Brouwer
2004-11-15 7:39 ` Lenar Lõhmus
2004-11-16 13:56 ` Brad Fitzpatrick
2004-11-17 4:01 ` Andrew Morton
2004-11-17 4:55 ` Nathan Scott [this message]
2004-11-17 7:00 ` Brad Fitzpatrick
2004-11-18 5:05 ` Nathan Scott
2004-11-19 4:59 ` Nathan Scott
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