[SR-Users] Kamailio Registration load Issue
govoiper at gmail.com
Tue Mar 28 19:12:52 CEST 2017
Interesting to know that AWS has PPS limitation.
Found this article to be useful :
On Tue, Mar 28, 2017 at 3:37 AM, Daniel-Constantin Mierla <miconda at gmail.com
> 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
> - 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
> 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.
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users at 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
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> sr-users at lists.sip-router.org
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