[asterisk-users] OSLEC and zaptel-1.4.5.1

[Brandon Black]

On 10/24/07, Alan Lord <alanslists at gmail.com> wrote:
> And anyone who has echo problems with x100p or other analogue cards
> should really give this a try. Most of the experiences I have read about
> have been very positive. Mine also :-)
>

Any in case anyone's wondering if it's too CPU intensive for little
embedded Asterisk devices, here's the speedtest results on a Soekris
net5501 (500Mhz Geode LX CPU):

Testing OSLEC with 128 taps (16 ms tail)
CPU executes 500.20 MIPS
-------------------------

Method 1: gettimeofday() at start and end
  671 ms for 10s of speech
  33.56 MIPS
  14.90 instances possible at 100% CPU load
Method 2: samples clock cycles at start and end
  33.56 MIPS
  14.90 instances possible at 100% CPU load
Method 3: samples clock cycles for each call, IIR average
  cycles_worst 64273 cycles_last 3849 cycles_av: 4018
  32.14 MIPS
  15.56 instances possible at 100% CPU load

-- Brandon