High CPU load and disk access

[Jeroen van Meeuwen (Kolab Systems)]

On 2013-01-23 11:39, Stefan Froehlich wrote:
> Hi,
> 
> as mentioned earlier I have the problem that my fresh kolab 
> installation
> started to show high CPU load and constant disk access after a couple 
> of
> days. Stopping kolab daemon  with /etc/init.d/kolab-server stop
> immediately stops disk access and CPU load. Everything works fine
> without the server but I'd really like to find the cause for this.
> How can I debug this?
> 

I think what we want to learn is what the kolab daemon is doing;

   # service kolab-server stop
   # kolabd -d 9 2>&1 | tee kolabd.log

Let this run for a few seconds/minutes, until you see exactly the same 
symptoms (prolonged, continuous CPU and Disk I/O that shouldn't really 
occur because nothing else is happening), and abort the kolabd -d 9 run.

kolabd.log should now contain a step-by-step description of what's 
going on. You can examine this file yourself and see if something 
obvious pops out, or strip out the sensitive information and ship it 
over to me (in private).

Kind regards,

Jeroen van Meeuwen

-- 
Systems Architect, Kolab Systems AG

e: vanmeeuwen at kolabsys.com
m: +44 74 2516 3817
w: http://www.kolabsys.com

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