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 <[email protected]>: > >> 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 >>>>> [email protected] >>>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users >>>>> >>>>> >>>>> >>>>> >>>>> >>>> -- Bogdan-Andrei Iancu www.voice-system.ro _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
