[SR-Users] Kamailio Registration load Issue

[Daniel-Constantin Mierla]

On 27/03/2017 21:15, Alex Balashov wrote:
> You might be running into semi-invisible/not widely publicised (but definitely very real) PPS limits on given instance sizes. 

I assume you refer to AWS instance packets per second limits -- I was
not aware of it, although I expected somehow. Has anyone encountered a
similar situation and can share some numbers that they faced during past
experiences? It would be useful to have in mind when dimensioning sip
server deployments...

Cheers,
Daniel

>
> On March 27, 2017 3:09:56 PM EDT, Jade SZ <jitterbuffer at 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.
>
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-- 
Daniel-Constantin Mierla
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