[OpenSIPS-Users] [OpenSIPS-Devel] OpenSER - RTPproxy Benchmark Test
abalashov at evaristesys.com
Sat Sep 20 00:46:30 CEST 2008
Maxim Sobolev wrote:
> Alex Balashov wrote:
>> I'd be curious to know if you get better results using MediaProxy 2.0,
>> now that it uses kernel packet routing hooks for the RTP switching.
>> 750 is quite disappointing.
> I think before calling it "disappointing" you should note the following
> few things:
> 1. The tests were performed using the old 1.0 version. In the latest
> stable version 1.1 we have made several important performance enhancements.
> 2. This was a synthetic test, therefore its results should be taken with
> the grain of salt, as it might not accurately simulate real world
> 3. In order to take advantage of dual-core architecture, some extra
> effort is necessary (see http://www.rtpproxy.org/wiki/RTPproxy/FAQ).
> Just to give you indication of the real-world numbers I just checked one
> of the production systems our customer use. The 4-core 3GHz Xeon system
> routinely pushes around 40-60MBps of RTP traffic and runs 4 copies of
> RTPproxy in parallel. Each of 4 copies has since the last boot forwarded
> about 30,000,000,000 RTP packets and used some 150,000 seconds of CPU
> time. As you can easily calculate, the peak packet forwarding capacity
> should be 4 x 200,000 packets per second, that is 800,000 RTP packets
> per second per whole box. With the shortest possible 10ms packets, this
> should allow for max 8,000 sessions, probably even more with 20 or 30 ms
> packets. Even if you discount that peak number heavily by 20-30% (to
> account for possible CPU time accounting errors in the Linux kernel and
> other scalability issues), still you will get conservative estimate of
> 4,000-5,000 sessions per server.
I realise all that. What I meant by "disappointing" was to say that
"these tests are probably not accurate and do not capitalise upon any
needed optimisations." I myself have gotten much better results than
that with rtpproxy (several thousand calls).
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