[OpenSIPS-Users] Setting opensips for maximum performance

[Jan Rozhon]

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