We are using wav, not WAV. I believe WAV is the one with GSM. Its a very good idea to compare WAV against wav, will run some tests and come back with outcome, will try Tzafrir's suggestion as well.<div><div><br></div><div>
Thanks guys</div><div>Vilius.<br><br><div class="gmail_quote">On 22 November 2010 16:31, Joel Maslak <span dir="ltr"><<a href="mailto:jmaslak@antelope.net" target="_blank">jmaslak@antelope.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
WAV or wav? One of these has GSM-encoding inside a WAV formatted<br>
envelope. That said, I wouldn't expect that to have any noticeable<br>
CPU utilization above that of GSM. If you are using the non-GSM<br>
version of WAV, then I am as baffled as you - hopefully someone who<br>
knows more about this can help.<br>
<br>
On Mon, Nov 22, 2010 at 7:58 AM, Vilius Adamkavicius<br>
<div><div></div><div><<a href="mailto:vilius.adamkavicius@invade.net" target="_blank">vilius.adamkavicius@invade.net</a>> wrote:<br>
> Hi Joel,<br>
> We have a meetme on which we are landing two G.711 alaw calls, one coming<br>
> from TDM another from SIP. Once we those parties are in the conference we<br>
> are adding one more leg using Local channel and starting to record it.<br>
> Surely it would be logical if it would be less overhead recording alaw wav<br>
> since we are using alaw on both parties, but its not.<br>
> Thanks,<br>
> Vilius.<br>
> On 22 November 2010 14:19, Joel Maslak <<a href="mailto:jmaslak@antelope.net" target="_blank">jmaslak@antelope.net</a>> wrote:<br>
>><br>
>> What format are the actual calls in? Are they in G.711u/a format or<br>
>> are they in something else (perhaps gsm?) format? I'm asking to find<br>
>> out if Asterisk would need to transcode them.<br>
>><br>
>> On Mon, Nov 22, 2010 at 6:47 AM, Vilius Adamkavicius<br>
>> <<a href="mailto:vilius.adamkavicius@invade.net" target="_blank">vilius.adamkavicius@invade.net</a>> wrote:<br>
>> > Hi All,<br>
>> > We have a requirement to record over 60 simultaneous calls. Our<br>
>> > recording<br>
>> > facilities are implemented using Monitor() over AMI. The thing we have<br>
>> > noticed that making 60 simultaneous call recordings using wav CPU load<br>
>> > is<br>
>> > significantly higher (around 2 times more) than using gsm. Even writing<br>
>> > call<br>
>> > recordings to /dev/null makes a big difference in CPU load.<br>
>> > What could be the reason for this? Is Asterisk updating wav headers<br>
>> > every<br>
>> > time it writes?<br>
>> > What would be recommended hardware setup for over 60 simultaneous call<br>
>> > records?<br>
>> > Regards,<br>
>> > Vilius.<br>
>> ><br>
>> ><br>
>> ><br>
>> > --<br>
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