[Kamailio-Users] Kernel Message

Alex Balashov abalashov at evaristesys.com
Thu Feb 12 22:23:41 CET 2009


Daniel-Constantin Mierla wrote:
> On 02/12/2009 11:11 PM, Alex Balashov wrote:
>> Brian Chamberlain wrote:
>>  
>>> On 12 Feb 2009, at 21:06, Alex Balashov wrote:
>>>
>>>    
>>>> Daniel-Constantin Mierla wrote:
>>>>      
>>>>> Hello,
>>>>> correlating messages:
>>>>> Feb 12 20:27:22 sw1 kernel: [3273100.093090] INFO: task 
>>>>> kamailio:22821 blocked for more than 120 seconds.
>>>>> and
>>>>> Process::  ID=14 PID=22821 Type=MI Datagram
>>>>> seems that one of your MI datagram was blocked for some time. Are 
>>>>> you using MI datagram commands often? What are they?
>>>>>         
>>>> Brian, I would guess CDRtool and its rating engine use a lot of MI 
>>>> commands as part of its interface with the proxy.  Daniel, can you 
>>>> corroborate that?
>>>>       
>>> I've been doing a lot of rerating today as it goes..
>>>     
>>
>> I don't know that this results in a lot of MI commands.  I think 
>> CDRtool and its processes use a lot of MI for managing session timers 
>> and stuff like that, or maybe that's Call Control.  I'm not really 
>> familiar with AG Projects' technology stack.
>>   
> OK, so we identified the source. Thanks a lot Alex!
> 
> Brian, you could sniff the UDP traffic for MI datagram, are you using 
> UDP sockets or unix sockets?

UNIX domain sockets.  I am not aware of a good way to "sniff" those.  Is 
there one?

I suppose one could switch to UDP sockets...

> Anyhow, I wonder what the cdrtool would need for rating from kamailio... 
> so if you can get the commands send by cdrtool, I can tell you where is 
> the possible lock.

I do not know.

I've been trying to help Brian with this, but I just don't know enough 
about the AG Projects end of things.

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
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