Hello list,
I have always though codec translation table is dircetly connected to system
speed, utill i came across this:
in my lab, i have 2 boxes,
First box is an Intel Celeron 1.7 GHZ with 256M RAM:
show translation
Translation times between formats (in milliseconds) for one second of
data
Source Format (Rows) Destination Format (Columns)
g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc
g726 g722
gsm - - 2 2 3 2 1 9
- - 25 3 -
ulaw - 6 - 1 3 2 1 9
- - 25 3 -
ilbc - 10 6 6 7 6 5 13
- - - 7 -
g726 - 7 3 3 1 3 2 10
- - 26 - -
Second server is Dual Xeon 2Gh 1G RAM
show translation
Translation times between formats (in milliseconds) for one second of
data
Source Format (Rows) Destination Format (Columns)
g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc g726 g72
gsm - - 4 4 6 4 3 28 -
- 25 5 -
ulaw - 7 - 1 4 2 1 26 -
- 23 3 -
ilbc - 9 4 4 6 4 3 28 -
- - 5 -
g726 - 7 2 2 1 2 1 26 -
- 23 - -
Here is the fun part, box1 is faster in converting ulaw to gsm!
Is this table accurate?
Does it mean asterisk is not handeling multiple cpus very good?
both boxes running asterisk 1.4.4
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