On Sat, 23 Dec 2006, Leo Ann Boon wrote:
At this point, I don't feel that 'show translation' is a useful indicator of
actual transcoding performance. It's OK for relative comparisons but utterly
useless if you need the figures for sizing purposes.
Just to give you another (relative) comparison... This is from a VIA
processor running at 533MHz, (64KB Cache) asterisk compiled as i586 as
it's missing some of the nicer MMX instructions:
g723 gsm ulaw alaw g726 adpcm slin lpc10 g729 speex ilbc
g723 - - - - - - - - - - -
gsm - - 10 10 32 12 9 43 - - 174
ulaw - 18 - 1 24 4 1 35 - - 166
alaw - 18 1 - 24 4 1 35 - - 166
g726 - 36 20 20 - 22 19 53 - - 184
adpcm - 19 3 3 25 - 2 36 - - 167
slin - 17 1 1 23 3 - 34 - - 165
lpc10 - 42 26 26 48 28 25 - - - 190
g729 - - - - - - - - - - -
speex - - - - - - - - - - -
ilbc - 49 33 33 55 35 32 66 - - -
This board runs very well with a TDM400P card in it.
On another Via processor, this time a C3 running at 1GHz with 128KB cache:
g723 gsm ulaw alaw g726 adpcm slin lpc10 g729 speex ilbc
g723 - - - - - - - - - - -
gsm - - 4 4 12 4 3 20 - - 72
ulaw - 6 - 1 10 2 1 18 - - 70
alaw - 6 1 - 10 2 1 18 - - 70
g726 - 13 9 9 - 9 8 25 - - 77
adpcm - 6 2 2 10 - 1 18 - - 70
slin - 5 1 1 9 1 - 17 - - 69
lpc10 - 17 13 13 21 13 12 - - - 81
g729 - - - - - - - - - - -
speex - - - - - - - - - - -
ilbc - 17 13 13 21 13 12 29 - - -
I'm finding these mini ATX boards with VIA processes to be generally very
good for small-office applications. Low power, fanless, boot from flash,
etc. and seem to just soak up everything thrown at them - until you need
to do an excessive amount of transcoding, but thats virtually non-existent
in my applications. (Although I'm using G726 on some IAX trunks over
office ADSL lines here in the UK. (outgoing b/w typically 256Kbps on older
installations, just over 400 on ADSL-MAX installations. In theory we can
have up to (just over) 800Kbps on the business-class -MAX installations,
but very few people are prepared to pay for it!!!
Gordon
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
