[Asterisk-Users] Echo canceller data-points

[Andrew Kohlsmith]

On Wednesday 15 March 2006 16:46, Steve Davies wrote:
> I thought I would try the 1.2 trunk/HEAD version of MG2 with the extra
> knobs and whistles, but found 2 problems. This version trains even a
> normally clean line in about 10 seconds, rather than instantly, and
> its CPU usage is through the roof compared to the 1.2.4 version of the
> code. (FYI I got very similar resuls at all intermediate SVN versions
> of the MG2 canceller between 1.2.4 and HEAD)
>
> My advice: Go with the 1.2.4 MG2 echo canceller, perhaps if you have
> plenty of spare CPU the newer code will become useful, but I could not
> cancel even 20 PRI channels using a 1GHz processor on the latest code
> - I got clicks, buzzing and eventually a dead PRI. With the 1.2.4
> branch I had 40% CPU free when cancelling 30 channels.

What did you use for CFLAGS/KFLAGS and PROC for your zaptel build?  What about 
USE_MMX and CALC_XLAW in zconfig.h?

-A.