[Kamailio-Users] OpenSER - RTPproxy performance test

[Daniel-Constantin Mierla]

Hello Jim,

On 09/20/08 00:03, Jim dalton wrote:
> We ran a benchmark test of OpenSER and RTPproxy to understand the relation
> between CPU capacity and the number of simultaneous calls that could be
> managed with acceptable call quality.
>
> OpenSER and RTPproxy were hosted on a Dell Precision 490 server with two
> Intel Xeon 5140 dual core, 2.33 GHz CPUs and 4 GB of RAM.  Three CPU cores
> were disabled for the test.  The test was run using just a single CPU core.
> Multiple SIPp clients directed traffic to OpenSER which queried an OSP
> server for call routing instructions.  The test was designed for each call
> to require an average of two retries before the call was completed to a SIPp
> server on the third try.  The two-way RTP stream for each call flowed
> through the RTPproxy.  Call Detail Records for each call attempt were sent
> from OpenSER to the OSP server.
>
> OpenSER and RTPproxy, using a single core of the 2.33 GHz CPU, can manage up
> to 750 simultaneous calls.
>
> A summary and detailed description of the benchmark test are available at
> http://www.transnexus.com/White%20Papers/OpenSER_RTPproxy_test.htm 
>
>   
thanks for sharing the results! I wonder if you could get the share of cpu used by openser during testing.

As you have access to 4 CPU cores, would be very interesting to see the impact of running 4 rtpproxy instances on the same machine and configure kamailio/openser to use all of them, to see how it really scales. nathelper module in kamailio/openser can use many rtpproxy instances at same time, doing load balancing of the rtp streams among available rtpproxies. The rtpproxy_sock parameter of nathelper module can take many rtpproxy control socket addresses:
http://www.kamailio.org/docs/modules/1.3.x/nathelper.html#AEN160

Cheers,
Daniel




-- 
Daniel-Constantin Mierla
http://www.asipto.com