asterisk users - Jul 2008 - Asterisk Taking CPU resources

Hi,

I have a strange problem, after some time my asterisk server starts
using more and more CPU resource and after some time it becomes
unusable. I need to kill the asterisk process before it renders the
whole system unusable. 
I have a few SIP phones, IAX trunk to other system and voicemail running
on that server.

Now, how do I troubleshoot, which part of asterisk is causing the load
on CPU ?  

 I'm using latest Asterisk 1.4 from Gentoo VoIP portage overlay. 

Kind Regards

-- 
Mateusz Pawlowski <js+asterisk at yllq.net>

On Wed, Jul 02, 2008 at 05:34:34PM +0100, Mateusz Pawlowski
wrote:
> Hi,
> 
> I have a strange problem, after some time my asterisk server starts
> using more and more CPU resource and after some time it becomes
> unusable. I need to kill the asterisk process before it renders the
> whole system unusable. 
> I have a few SIP phones, IAX trunk to other system and voicemail running
> on that server.
> 
> Now, how do I troubleshoot, which part of asterisk is causing the load
> on CPU ?  
Do you see anything in the logs?

One thing to do is identifying which thread is confuming the CPU.
In top, use 'H' to see separate thread (or something like ps -eLf).

Also in top: is some of that time "system"? If so, this is not a pure
100% CPU loop, and strace may be able to provide some further hints.

You can then use:  

  strace -p <id of that thread>

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir