[pjsip] Media issue with multiple (parallel) calls

Anshuman S. Rawat arawat at 3clogic.com
Tue Feb 12 09:27:18 EST 2008

> On 2/12/08, Anshuman S. Rawat <arawat at 3clogic.com> wrote:
>> > Are you really tight on CPU? If so, then perhaps this was caused by
>> > the lack of power to run more than one simultaneous G729 calls rather
>> > than encode/decode being done in a single thread.
>> >
>> I dont think I am tight on CPU. I have a Centrino Duo @2GHz with a GB of
>> RAM.
>> BTW, I do see these frequently in the log file.
>> 13:33:33.750 splitcomb.c Overflow in downstream direction
>> 13:33:33.750 splitcomb.c Underflow in upstream direction
> Ah okay. In that case increasing PJMEDIA_SOUND_BUFFER_COUNT probably
> will help. Try with:
> in your config_site.h, and if it's okay, experiment with reducing the
> number until you get comfortable latency.

I had tried that earlier with a value of 12 and tried again (now) with a 
value of 16. But that didn't help much besides the fact that it did reduce 
the number of 'overflow'/'underflow' log messages. And I seem to see those 
messages as frequently with pjmedia's g711 codec too.


> cheers,
> -benny

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