You can go ahead and close this case, as I won't be able to help you troubleshoot this system. This was a production web server and since we were having this problem, we moved to Squid and used it's caching abilities to do what we needed.
----- Original Message -----
From: "Moritz Muehlenhoff" <firstname.lastname@example.org>
To: "Matt Jamison" <email@example.com>
Cc: firstname.lastname@example.org, email@example.com
Sent: Sunday, May 30, 2010 8:42:05 AM
Subject: Re: kernel: [56585.121000] BUG: soft lockup - CPU#1 stuck for 61s! [pdflush:210]
tags 536236 moreinfo
On Mon, Oct 19, 2009 at 12:02:45AM +0100, Ben Hutchings wrote:
> On Wed, 2009-07-08 at 10:38 -0400, Matt Jamison wrote:
> > I thought I stated in my email that I had gotten this with both
> > kernels. I have a server called web06 that has "Linux version
> > 2.6.30-1-amd64 (Debian 2.6.30-1) (firstname.lastname@example.org) (gcc version
> > 4.3.3 (Debian 4.3.3-10) ) #1 SMP Sun Jun 14 15:00:29 UTC 2009" as
> > it's kernel and then web02 which I sent the bug report from has
> > "Linux version 2.6.30-bpo.1-amd64 (Debian 2.6.30-1~bpo50+1)
> > (email@example.com) (gcc version 4.3.2 (Debian 4.3.2-1.1) ) #1 SMP
> > Fri Jun 26 09:41:55 UTC 2009"
> > We can focus on web06 if you like, the errors from that are slightly
> > different and I was using FSCACHE with my NFS. Here is the error
> > from syslog.
> Please don't describe two bugs in one report as it confuses people and
> makes it harder to fix either bug.
> We'll deal with the soft lockup bug on web02 as #536236 and the null
> pointer dereference bug on web06 as #551542.
The next release of Debian (6.0, code name Squeeze) will be based
on 2.6.32. Please test the current 2.6.32 from unstable/testing and tell
us whether the soft lockup problem persists. If so, we should report
it upstream to the kernel.org developers.
The 2.6.32 kernel is available from packages.debian.org and can
be installed in both Debian stable, testing and unstable
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