[Kamailio-Users] Kamailio (1.5 rev5834) and/or rtpproxy gets frozen

[Daniel-Constantin Mierla]

On 03/01/2010 12:35 PM, Iñaki Baz Castillo wrote:
> El Lunes, 1 de Marzo de 2010, Daniel-Constantin Mierla escribió:
>    
>> On 03/01/2010 11:52 AM, Iñaki Baz Castillo wrote:
>>      
>>> El Lunes, 1 de Marzo de 2010, Iñaki Baz Castillo escribió:
>>>        
>>>> Sometimes, with no reason (not just in the moments of highest traffic)
>>>> kamailio gets totally frozen, this is, it doesn't reply to SIP messages,
>>>> neither relays them. Then Kamailio cannot be killed (just with -9).
>>>>          
>>> And the worst: when this occurs kamailio logs *nothing*.
>>>        
>> is it eating a lot of cpu? Can you attach to it with gdb and do a
>>   backtrace?
>>      
> Do you mean running kamailio as usual and later running:
>    gdb>  attach KAMAILIO_MASTER_PID
> ?
>    

yes, run as usual and when it is no longer working attach to a SIP 
worker process and grab the backtrace.

The master process does not do much, just supervising the other 
processes in order to clean.

> or running directly:
>
> $ gdb --args  /usr/sbin/kamailio -P /var/run/kamailio/kamailio.pid -m 64 -u
> kamailio -g kamailio
>
> In the second case kamailio doesn't fork and doesn't bind to the listening
> address. So I assume you mean the first case.
>    
Right.

> Could it affect to the performance of the service? If not, when to run "bt"?
> after the problem occurs?
>    

Yes, after the problem occurs. Only the process you attach to is going 
to be blocked in gdb, the others should function normally (but they 
don't anyhow, as I understood).

> Also note that when Kamailio gest frozen there is no coredump.
> I also tell that after running "kamctl fifo address_reload" it takes several
> minutes until it get frozen, but it doesn't occur always.
>
>
>
>    
>> Might be some race in permissions module induced by address_reload MI
>> command.
>>      
> I suspected it. However it doesn't explain the fact that later kamailio cannot
> be started again (even after killing all the kamailio processes with -9).
> Would it make sense?
>    
Is it the fifo/pid file there? No error why is not starting again?

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
* http://www.asipto.com/index.php/sip-router-masterclass/