[asterisk-users] Core show translation > 4000ms

[Kevin P. Fleming]

On 09/30/2011 03:56 AM, Administrator TOOTAI wrote:
> Hi list,
>
> we have 2 asterisk boxes in VM (kvm) on 2 different Dell servers, one is
> Lenny kernel 2.6.26 asterisk 1.6.2.20, the second CentOS 2.6.18 asterisk
> 1.4.36 (Elastix). Both 64bits, no hardware involved, dahdi on both
> machines for meetme timing.
>
> Doing core show translation give on the Lenny server
>
> Translation times between formats (in microseconds) for one second of data
> Source Format (Rows) Destination Format (Columns)
>
> g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc g726 g722
> siren7 siren14 slin16
> g723 - - - - - - - - - - - - - - - -
> gsm - - 2 2 4001 2 1 2 - - - 4001 4002 - - 4003
> ulaw - 4001 - 1 4001 2 1 2 - - - 4001 4002 - - 4003
> alaw - 4001 1 - 4001 2 1 2 - - - 4001 4002 - - 4003
> [...]
>
> and on the CentOS one
>
> g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc g726 g722
> g723 - - - - - - - - - - - - -
> gsm - - 2 2 2 2 1 3 - 6 - 2 2
> ulaw - 2 - 1 2 2 1 3 - 6 - 2 2
> alaw - 2 1 - 2 2 1 3 - 6 - 2 2
> [...]
>
> Why do we have such latency on the Lenny machine for the codec
> translation? Is this due to a kernel parameter?

Because you didn't read the output. It clearly says "(in microseconds)" 
in the 1.6.x output.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
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