From: Andrew Morton <akpm@linux-foundation.org>
To: Badari Pulavarty <pbadari@gmail.com>
Cc: Andy Whitcroft <apw@shadowen.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
sct@redhat.com, adilger@clusterfs.com,
ext4 <linux-ext4@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
mel@csn.ul.ie,
Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
Oleg Nesterov <oleg@tv-sign.ru>
Subject: Re: 2.6.23-rc6: hanging ext3 dbench tests
Date: Mon, 24 Sep 2007 12:12:55 -0700 [thread overview]
Message-ID: <20070924121255.2ef7ab3a.akpm@linux-foundation.org> (raw)
In-Reply-To: <1190656918.13955.7.camel@dyn9047017100.beaverton.ibm.com>
On Mon, 24 Sep 2007 11:01:58 -0700
Badari Pulavarty <pbadari@gmail.com> wrote:
> Hi Andy,
>
> I managed to reproduce the dbench problem. (not sure if its the same
> thing or not - but symptoms are same). My problem has nothing to do
> with ext3. I can produce it on ext2, jfs also.
>
> Whats happening on my machine is ..
>
> dbench forks of 4 children and sends them a signal to start the work.
> 3 out of 4 children gets the signal and does the work. One of the child
> never gets the signal so, it waits forever in pause(). So, parent waits
> for a longtime to kill it.
>
> BTW, I was trying to find out when this problem started showing up.
> So far, I managed to track it to 2.6.23-rc4. (2.6.23-rc3 doesn't seem
> to have this problem). I am going to do bi-sect and find out which
> patch caused this.
>
> I am using dbench-2.0 which consistently reproduces the problem on
> my x86-64 box. Did you find anything new with your setup ?
>
Thanks, Badari. That sounds like a bit of a showstopper for 2.6.23.
Michal, do you have this regression in the dirt file?
next prev parent reply other threads:[~2007-09-24 19:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-11 12:42 2.6.23-rc6: hanging ext3 dbench tests Andy Whitcroft
2007-09-11 16:55 ` Jan Kara
2007-09-11 16:58 ` Linus Torvalds
2007-09-11 17:30 ` Andy Whitcroft
2007-09-14 9:49 ` Andy Whitcroft
2007-09-19 18:15 ` Andy Whitcroft
2007-09-24 18:01 ` Badari Pulavarty
2007-09-24 19:12 ` Andrew Morton [this message]
2007-09-24 20:04 ` Linus Torvalds
2007-09-24 21:20 ` Badari Pulavarty
2007-09-25 0:28 ` Badari Pulavarty
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