[OpenSIPS-Users] MediaProxy call quality issues

[Richard Revels]

I expect you will find that calls per second and cpu have a lot less  
to do with media relay performance than do concurrent sessions and  
codec (in other words, packets per second).  Check out this article  
and then we can discuss tools for checking network limitations if  
needed.

http://staff.washington.edu/corey/gulp/

I would say that "ip -s link show" and "netstat -s" would be a couple  
of good ones to start with.  Also tshark captures from both sides of  
the relay on a poor audio connection of course.




On May 28, 2009, at 12:29 PM, Darren Sessions wrote:

> Hi all,
>
> Just wondering . .
>
> We've got set of relays doing on average of 17 to 19 cps. When I get
> traffic spikes my cps can hit just shy of 30 cps. When the cps gets to
> about 24 - 26 cps we start to get loads of choppy audio and in some
> cases one-way audio.
>
> No errors in any of the logs on the OpenSIPS/Dispatcher or the relays;
> 0% cpu utilization across the board. Audio at the lower volumes sounds
> superb.
>
> Taking *only* the relays out of the mix resolves the problem  
> instantly.
>
> We're using stock Ubuntu 8.04LTS with the server kernel.
>
> Any thoughts would be appreciated.
>
> Cheers,
>
>  - Darren
>
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