[Asterisk-Users] Re: MeetMe: lots of buffer overruns/underruns when connecting over IAX

[Tony Mountifield]

In article <200604201746.06092.erik at hensema.net>,
Erik Hensema <erik at hensema.net> wrote:
> Hello,
> 
> Situation: I've got two asterisk 1.2.4 servers, connected to each 
> other over the internet with IAX2 with about 20msec delay.
> 
> One of the servers is hosting MeetMe. It's working fine as long as 
> only SIP phones connected to the meetme server participate in the 
> conference. As soon as a participant using IAX2 is connecting, lots 
> and lots of buffer overruns and underruns are generated:
> 
> Apr 20 17:37:27 NOTICE[20970]: app_meetme.c:1276 conf_run: Audio 
> bytes: 640  Buffer size: 320
> Apr 20 17:37:27 NOTICE[20970]: app_meetme.c:1276 conf_run: Audio 
> bytes: 320  Buffer size: 640
> Apr 20 17:37:27 NOTICE[20970]: app_meetme.c:1276 conf_run: Audio 
> bytes: 640  Buffer size: 320
> Apr 20 17:37:28 NOTICE[20970]: app_meetme.c:1276 conf_run: Audio 
> bytes: 320  Buffer size: 640
> Apr 20 17:37:28 NOTICE[20970]: app_meetme.c:1276 conf_run: Audio 
> bytes: 640  Buffer size: 320
> 
> This always happens, even if there's only one participant in the 
> conference.

Those messages are not a part of the standard MeetMe. It looks like
you are running a version that includes Dan Austin's dynamic buffer
patch from Mantis bug #5697.

That dynamic buffer patch is not really required. It was an attempt to
get the pseudo-device to accept a whole frame in one write(), but this
has been obviated by the non-blocking flag to careful_write().

Try updating to an unpatched 1.2.7 instead.

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org