Date: Mon, 16 May 2011 09:49:49 +0300
From: Apollon Oikonomopoulos <apoikos@gmail.com>
To: Faidon Liambotis <paravoid@debian.org>
Cc: Nikola Ciprich <nikola.ciprich@linuxbox.cz>, Willy Tarreau <w@1wt.eu>,
        linux-kernel@vger.kernel.org, stable@kernel.org,
        seto.hidetoshi@jp.fujitsu.com,
        =?utf-8?B?SGVydsOp?= Commowick <hcommowick@exosec.fr>,
        Randy Dunlap <rdunlap@xenotime.net>, Greg KH <greg@kroah.com>,
        Ben Hutchings <ben@decadent.org.uk>, chronidev@gmail.com
Subject: Re: 2.6.32.21 - uptime related crashes?
Message-ID: <20110516064949.GA6000@noc.grnet.gr>
References: <20110428082625.GA23293@pcnci.linuxbox.cz>
 <20110428183434.GG30645@1wt.eu>
 <20110429100200.GB23293@pcnci.linuxbox.cz>
 <20110430093605.GA10529@1wt.eu>
 <20110430173905.GA25641@tty.gr>
 <20110430201436.GF10529@1wt.eu>
 <20110514190423.GA2264@nik-comp.lan>
 <20110515225653.GA17342@tty.gr>
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Hello all,

On 01:56 Mon 16 May     , Faidon Liambotis wrote:
> > and Peter Zijlstra asked there, whether reporters systems were running
> > some RT tasks. Then I realised that all of my four crashed boxes were
> > pacemaker/corosync clusters and pacemaker uses lots of RT priority
> > tasks. So I believe this is important, and might be reason why other
> > machines seem to be running rock solid - they are not running any RT
> > tasks.  It also might help with hunting this bug. Is somebody of You
> > also running some RT priority tasks on inflicted systems, or problem
> > also occured without it?
> 
> No, no RT tasks here. The boxes in my case were just running a lot of
> kvm processes.

Actually we are running multipathd, which is an RT process and heavily loaded
on these particular systems.

Regards,
Apollon
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