[Asterisk-Users] meetme conference latency degrades...

[Chris Stenton]

This is a known problem and it does not matter what zaptel timer you use. A 
solution is available in  'svn head' by using

asterisk.conf
internal_timing = yes

OR
Enable internal timing support (-I)

on the command line. I don't know if this has been backported to the stable 
branch.

Chris

----- Original Message ----- 
From: "Michael George" <george at mutualdata.com>
To: <asterisk-users at lists.digium.com>
Sent: Thursday, May 04, 2006 2:48 AM
Subject: [Asterisk-Users] meetme conference latency degrades...


> We have recently started making more frequent use of the meetme
> conference of our * system.
>
> We are using v1.0.8 with a 2.6.11 kernel on our system.
>
> We generally have 4 callers in it: two with the gsm codec and 2 with g729.
> Initially, the conference works fine and there is little latency.  After
> about 15min., though, the latency is very noticable and by 25min it's
> unbearable.
>
> If we all leave the conference and return, the latency is unnoticable
> again.
>
> The load on the box is minimal, and only our meetme is running most of
> the time.  Checking system load with top shows 0.1 or less.
>
> We have no digium hardware and use ztdummy for our timing device.
> zttest yields results generally in the area of 99.96%, but about 3-4%
> will be as low as 95%.
>
> In much smaller systems with Digium hardware, the accuracy is never
> below 99.98% and is often 100%.
>
> Is this apparent inaccuracy of the ztdummy timer likely the cause of the
> increasing latency in our meetme conference?
>
> Is there any way to improve it?
>
> Thank you, in advance, for any help.
>
> -- 
> -M
>
> There are 10 kinds of people in this world:
> Those who can count in binary and those who cannot.
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