[OpenSIPS-Users] Setting opensips for maximum performance

[Bogdan-Andrei Iancu]

Hi Jan,

Jan Rozhon wrote:
> Hi Bogdan,
>
> thank you for your advice, but no help so far. I ran a test again using 
> a load of 280 calls per second (2800 simultaneous calls) and watched 
> receive buffer errors using netstat -su, but only 2930 errors occured 
> out of almost 3 000 000 packets received. So if I understand it well, 
> the problem is not caused by udp buffer size, because despite the low 
> number of udp datagrams discarded more than 60 000 calls were not 
> succesful (aproximately 25% of total calls).
>   
In sipp, what are the the cps and max parallel call you are using ?
Also, what kind of failures does the sipp report (missing 200ok ? 
missing BYE? etc).
> Then I checked the database setting - I am using MySQL with "0" 
> parameter (no database persistency), so I dont know how else I can make 
> it run faster (I cannot use separate computer for the database).
>   
so no DB persistence for usrloc, but you mentioned  using auth - is this 
correct? as auth is doing real time DB queries maybe you should try 
disabling the auth also to see how this affects the performance.
> As an opensips newbie, I dont have a clue, where the real problem could 
> be, so any further help would be appreciated.
>
> Thanks, Jan
>
> Dne 19.2.2010 14:56, Bogdan-Andrei Iancu napsal(a):
>   
>> Hi Jan,
>>
>> You need to see where the bottleneck is. If it is not the CPU, it must
>> be some I/O blocking opensips. For example the DB may be too slow
>> blocking opesips processes ->  no process to read traffic from network ->
>> traffic discarded, package lost.
>>
>> So, you should first look with netstat at the UDP sock, to see if the
>> in-buffer is full or not (if full, the kernel will discard packages).
>>
>> Regarding the timeouts (for calls, for retransmissions) see the TM module:
>>         http://www.opensips.org/html/docs/modules/1.6.x/tm.html#id228443
>>
>> Regards,
>> Bogdan
>>
>> Jan Rozhon wrote:
>>    
>>     
>>> Hello,
>>>
>>> as a part of my diploma thesis I'm trying to do some performance testing
>>> of opensips running on low cost machine with 4GB of RAM and dual-core
>>> AMD Athlon processor. As a generator of SIP traffic I use SIPp v3.1
>>> running on 4 virtual computers as UAC and two computers as UAS all
>>> connected just by gigabit ports of a single switch. My proublem is, that
>>> as soon as I reach the load of 200 calls per second (2000 simultaneous
>>> calls) many of those calls (aroud 50%) don't finish succesfully. CPU
>>> utilization of opensips machine is around 40% and memory around 25%, so
>>> the opensips has still a lot of free resources, but it doesn't use them.
>>> Could you please advise me, how to change default configuration script
>>> and opensips settings to achieve better results?
>>>
>>> Right now, the only changes I made is :
>>> -enabling registrar/proxy authentication;
>>> -disabled tcp, since all the traffic is carried by udp;
>>> -set shared memory to 2048 MB;
>>> -set number of children to 16
>>> -limit debug level to 1
>>>
>>> PS. How can I increase the time, after which opensips retransmits SIP
>>> messages?
>>>
>>> Thanks in advance,
>>> Jan
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>>
>>>      
>>>       
>>    
>>     
>
>
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>
>   


-- 
Bogdan-Andrei Iancu
www.voice-system.ro