[SR-Users] Kamailio Registration load Issue

[SamyGo]

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 <miconda at 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
>
>
>
> _______________________________________________
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>
>
> --
> 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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