From: Jesper Krogh <jesper-Q2TZfHgGEy4@public.gmane.org>
Subject: Re: 2.6.31.6, unresponsiveness and something with nfs
Date: Wed, 02 Dec 2009 22:19:40 +0100
Message-ID: <4B16D9EC.7080009@krogh.cc>
References: <4B13FBE7.9040304@krogh.cc>
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To: linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org
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Sender: linux-nfs-owner@vger.kernel.org

> I have a system running 2.6.31.6 that when running a particular process
> become "unresponsive". I cannot really tell what it is but the effect is
> that logins as ordinary users hangs, when that user has its home on a
> remote NFS-server.
> 
> so from root "su - localuser" works excellent. But su - user-with-home
> on-nfs doesnt.

Ok, the situation is more advanced than just that. I now have the
"sorting" process running while there is high cpu-only load and that
doesn't trigger the problem, so it seems to be that I have to have
"large merging, high cpu-load and lots of networktraffic on the NIC
(10GbitE)" before I encounter the prooblem.

Is there anything I can do to get a trace or other information about
what's holding the "login" process back the next time I get into this
situation?

Thanks
-- 
Jesper