[Live-devel] Bad performance with 4 or more clients at proxy server

[Frank van Eijkelenburg]

Hi,

In my test setup I have one back-end stream and a proxy server running. 
When I connect to the proxy server with a VLC player and play the 
stream, everything is working fine. However, when I start multiple VLC 
players and have them playing the same stream, I will get a bad 
performance after starting the fourth VLC player (the image quality is 
very bad and the framerate seems to be very low). The cpu load is very 
low and the network traffic also seems to be no problem.

I already tried to increase the buffer size in the RTSPServer 
(increaseSendBufferTo) to 2 MB, but it does not result in a better 
performance. By the way, I also increased the buffer size at the OS 
(Linux) with sysctl net.core.rmem_max.

Do you have any idea what could cause this performance issue? When I 
connect to the back-end stream directly (without proxy) and while I have 
a bad performance at the other VLC players, I will receive a correct 
normal image stream (good quality and framerate). So the back-end stream 
is not the problem.

-- 

Met vriendelijke groeten / With kind regards,

*Frank van Eijkelenburg* Lead Designer

*T* +31(0)182594000 | *E* frank.van.eijkelenburg at technolution.nl
*A*Burgemeester Jamessingel 1, P.O. Box 2013, 2800 BD Gouda, The 
Netherlands | *W*technolution.com

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