You might be running into semi-invisible/not widely publicised (but definitely very real) PPS limits on given instance sizes.
On March 27, 2017 3:09:56 PM EDT, Jade SZ <jitterbuf...@gmail.com> wrote: >Hi Guys, > >I am running a simple REGISTER load test on: > >1) Kamailio sever with 2 cores - mem 5G >2) Kamailio server with 4 cores - mem 16G > >Both are EC2 instances. > >At -r = 500 i.e. 500 reg/sec sipP test works fine with very few >re-trans. >But when i increase it to 800 reg/sec it starts retransmissions in >bulk. > >I don't see server's CPU, load-avg or memory shooting. Running >everything >by default, even using kamctl to start the instance. So I have not >tuned >any params yet. > >My main concern is how can I make server choke and get its actual >capacity, >and avoid these retransmissions as apparently kamailio is not even >utilizing 2 cores and CPU usage is under 10 always. > >Results of both server is same i.e. 500 reg/sec max so I am sure there >is >some problem that needs a fix, but need some hints here. > >Also used multiple SIPp's to rule out if it is SIPp issue, but after >500 I >see same problem. > > >Regards, >JSZ -- Alex -- Principal, Evariste Systems LLC (www.evaristesys.com) Sent from my Google Nexus. _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users