[CentOS] BUG: soft lockup CPU stuck for 10seconds (Server went down)

[Roland RoLaNd]

i couldn't connect to it to check through ssh.
and when it comes to the console, i couldn't do anything either as a repetitive output as the screen shot attached keeps appearing.

this is an internal testing server with apache and mysql installed.
usually the load average is 8 % max. 

server's specs:

Intel Core i7-950 3.06GHz 8MB Quad Core 4.8GT/s
8 GB of RAM

it's worth mentioning that i have software raid and LVM set on it.
iv'e reach online that the weekly raid schedule may cause this though i cant seem to b sure of that any advice how to check?




> Date: Mon, 7 Mar 2011 09:24:16 -0800
> From: jpeltier at sfu.ca
> To: centos at centos.org
> Subject: Re: [CentOS] BUG: soft lockup CPU stuck for 10seconds (Server went down)
> 
> ----- Original Message -----
> | Hello,
> | 
> | Today my server stopped responding.
> | i went to the console and on the screen there were a continuous loop
> | of the following info shown on the screen:
> | 
> | BUG: soft lockup - CPU#0 stuck for 10s! [java:13959]
> | 
> | and alot of other information.
> | ii've took a screen shot of the info shown , you can find it under the
> | following url: http://img585.imageshack.us/i/img00012201103070833.jpg/
> | and had to hard reset for it to be back up and running.
> | 
> | i tried googling with no luck for direct relevant info.
> | so hoping you can help out
> | 
> | Thanks,
> | 
> | --Roland
> | 
> | _______________________________________________
> | CentOS mailing list
> | CentOS at centos.org
> | http://lists.centos.org/mailman/listinfo/centos
> 
> This is likely due to thread deadlock.  What is the load on the machine at the time that this error occurs?  I've seen this very error when running The Mathworks Distributed Computing Toolbox server.  The machine would become very "unsettled" when it tried to run on more than four 2 CPUs.  How many CPUs are in this system?
> 
> -- 
> James A. Peltier
> IT Services - Research Computing Group
> Simon Fraser University - Burnaby Campus
> Phone   : 778-782-6573
> Fax     : 778-782-3045
> E-Mail  : jpeltier at sfu.ca
> Website : http://www.sfu.ca/itservices
>           http://blogs.sfu.ca/people/jpeltier
> 
> 
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