Hi, Interesting to know that AWS has PPS limitation. Found this article to be useful : http://techblog.cloudperf.net/2016/05/2-million-packets-per-second-on-public.html
Regards, Sammy On Tue, Mar 28, 2017 at 3:37 AM, Daniel-Constantin Mierla <mico...@gmail.com > wrote: > Hello, > > besides Alex' suggestion to look at AWS PPS limits, few things to take in > consideration in such case: > > - if CPU usage is low, then if you use DNS for routing, be sure that DNS > server is very responsive > - if you do auth with database, be sure that database is very responsive > - if you print extensive log messages, be sure syslog is configured > asynchronous > - check the received queue on sip port with netstat, if it is high > value, then kamailio is stuck in some operations (like those above) and > doesn't read as fast as the end point transmits > - if sipp runs on a low capacity system, I noticed that it cannot handle > the responses at high throughput even when they are sent to it and it > actually thinks it hasn't received them and do retransmissions > > Cheers, > Daniel > > On 27/03/2017 21:09, Jade SZ 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 > > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing > listsr-us...@lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > > -- > Daniel-Constantin Mierlawww.twitter.com/miconda -- www.linkedin.com/in/miconda > Kamailio Advanced Training - May 22-24 (USA) - www.asipto.com > Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com > > > _______________________________________________ > 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 > >
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