Hello Stanislaw, thanks for your reply. I dont think that trouble causes SIPp. I run all 6 instances on 6 virtual computers - the physical box contains 16GB of RAM and 8 Xeon 2,8GHz cores - for each virtual computer I allocate 1 core of physical CPU, since SIPp is just single threaded , and 1024 GB of RAM - OS on VM is Ubuntu 9.10. On a very old machine I was able to reach 200 calls without bigger issues, now on high tech server I am limited to 200 calls per second as well...
The exact problem is, that the call is interrupted before it is ended by regular Bye/200Ok. Until I reach 200 calls per second - everything is fine, then retransmissions rapidly increase and after 240 calls the significant number of calls is lost in progress. Dont know where to look - on PbX -CPU is not fully utilized -RAM is used just to 25% (around 1024MB) -LAN is not overwelmed -UDP buffer discard just few datagrams on VMs with SIPp -CPU is utilizet to 50% tops -RAM is OK -LAN is ok -UDP buffer ok too Thanks, Jan. Dne 21.2.2010 20:19, Stanisław Pitucha napsal(a): > On 18.02.2010 13:57, Jan Rozhon wrote: > >> 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 >> > You're not running them all on the same physical box, are you? > If yes, then you might find sipp itself to be a CPU hog and causing a > lot of trouble + overhead of processing 6 machines + overhead of > software networking... You should be able to push 200 SIP-only CPS from > a single box / single sipp process without problems - I'm able to do > 100+ cps on a dated single-core laptop. > Start small - then increase until you see problems and check why exactly > did they occur. > > >> calls) many of those calls (aroud 50%) don't finish succesfully. CPU >> > Can you find out what does "don't finish successfully" mean exactly? Are > you not getting the same packets on the other side? Are you hitting the > retransmission limit? Are you getting wrong packets? It's easier to > debug stuff once you know exactly how it fails... > > Some more stuff to check: are you using retransmissions in sipp? how > long does it take to process a single message in opensips (benchmark > module helps here a lot)? > > _______________________________________________ > Users mailing list > Users@lists.opensips.org > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users