[SR-Users] RTPEngine performance - How far are you pushing your systems

Henning Westerholt hw at skalatan.de
Mon Jan 6 14:45:39 CET 2020

Hello Davy,

You should look into it, sounds strange. Compare e.g. to this e-mail from 2015 – over 16k simultaneous calls on a 12 core machine:



Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>

From: sr-users <sr-users-bounces at lists.kamailio.org> On Behalf Of davy van de moere
Sent: Monday, January 6, 2020 12:52 PM
To: Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: [SR-Users] RTPEngine performance - How far are you pushing your systems

Dear all,

Not a direct question on kamailio, but on rtpengine, so feel free to ignore :)

I have a farm of rtpengine servers , supporting our set of kamailio's.

On recent decent hardware (hp dl360 gen9/10 servers), I typically push my systems upto 2500 channels per machine. Then I tend to see the load of the machine go up in a logarithmic manner. E.g. a load of 3 supports 2500 channels, but when its at 3000 channels, load can be at 8. etc.

I have the kernel module running, and I have a good impression it's being used too. No transcoding is going on, no recording, ... I've tried on different OS'es, different network cards, and I always end up at that 2500 channels +-.

Is that what I can expect from rtpengine? Or am I really overlooking something? What numbers do you push out of your systems?

kind regards and happy 2020!
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