[OpenSIPS-Users] Setting opensips for maximum performance

[Bogdan-Andrei Iancu]

If you received a 500 reply from opensips, you may check opensips logs 
for errors - maybe opensips is running out of memory or some other 
internal error.

Regards,
Bogdan

Jan Rozhon wrote:
> Hi Bogdan,
>
> I also thought, that the problem may be in SIPp, however most error I
> get in SIPp are 500 Server Error Occured, so It directed me to
> Opensips, moreover I tried to increase the load on a single VM and the
> problems didnt occure until I reached 100% CPU utilization on SIPp VM.
>
> Disabling the authentication is not an option for me, because I need
> it in my thesis, but I will try it to see, if it is not the
> bottleneck.
>
> Thanks
> Jan
>
> 2010/2/22 Bogdan-Andrei Iancu <bogdan at voice-system.ro>:
>   
>> 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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>           
>>>>         

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