asterisk users - Jul 2005 - Music on Hold: CPU Intensive Monster

OK. So I did a test last night. All of asterisk's threads where using 
0.0% CPU.

I made 1 call to our call queue.

CPU jumped to average of 9% and stayed around that for the 2 minutes I 
was in the queue just listening to music on hold.

MOH is in MP3 format and I'm using format_mp3. Phone was linksys PAP2-NA 
using G729.

Can I reasonably assume that the 9% was decoding the MP3, then encoding 
G729?

I tried using Anthm's RAW format but that actually made things worse.

I tried going back to mpeg321 and asterisk still used the same amount of 
CPU.

Any ideas for getting processor usage down on MOH?

-Matthew

Matthew Boehm wrote:
> Any ideas for getting processor usage down on MOH?
Encode it in the format you want to send out would help a little.

-- 
Cheers,

Matt Riddell
_______________________________________________

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Hi Matthew,

i found the following link very usefull: 
http://www.orderlyq.com/asteriskqueues.html#moh

It is an alternativ to mpg123. It works very fine for me.

Regards


Matthew Boehm wrote:
> OK. So I did a test last night. All of asterisk's threads where using 
> 0.0% CPU.
> 
> I made 1 call to our call queue.
> 
> CPU jumped to average of 9% and stayed around that for the 2 minutes I 
> was in the queue just listening to music on hold.
> 
> MOH is in MP3 format and I'm using format_mp3. Phone was linksys
PAP2-NA
> using G729.
> 
> Can I reasonably assume that the 9% was decoding the MP3, then encoding 
> G729?
> 
> I tried using Anthm's RAW format but that actually made things worse.
> 
> I tried going back to mpeg321 and asterisk still used the same amount of 
> CPU.
> 
> Any ideas for getting processor usage down on MOH?
> 
> -Matthew
> 
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