<div dir="ltr">I found below here: <a href="http://www.voip-info.org/wiki/view/Asterisk+cmd+MeetMe">http://www.voip-info.org/wiki/view/Asterisk+cmd+MeetMe</a><br><br><span style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px">If you have too many conferences, one CPU may not be able to mix all the audio and you will have audio problems even if there are 7+ other CPUs that are essentially idle while waiting for one CPU to mix everything. You should be able to handle 512 conference participants on a modern server system without problem. The current trunk of </span><strong style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px">DAHDI linux limits the number of open pseudo channels to 512 for this reason</strong><span style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px">. [1]</span><div>
<br></div><div>Thanks,</div><div>Steve T<br><br style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px"><span style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px">[1] <a href="http://svn.asterisk.org/view/dahdi?view=revision&revision=9610">http://svn.asterisk.org/view/dahdi?view=revision&revision=9610</a></span><br style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px">
<br style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px"><span style="color:rgb(0,0,0);font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:12px">The new ConfBridge module in the upcoming Asterisk 1.10 release may not have this limitation.</span><br>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Mar 21, 2014 at 11:53 AM, Steve Edwards <span dir="ltr"><<a href="mailto:asterisk.org@sedwards.com" target="_blank">asterisk.org@sedwards.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I'm trying to determine the capacity of my host running Asterisk 11.8.1 on CentOS 6.5.<br>
<br>
The host is an Intel E3-1240v3 with 8GB RAM, an SSD, and gigabit Ethernet.<br>
<br>
The primary application will be bridging groups of users using meetme().<br>
<br>
I'm using 2 boxes -- 1 to initiate calls using call files (box1), and 1 behaving a bit more like a production box -- bridging calls (box2).<br>
<br>
The call file on box1 originates a call to box2 and then plays a 2 hour WAV file.<br>
<br>
The dialplan on box2 drops the call into a meetme, creating the room name from the last 2 digits of the current call count -- distributing the calls into 100 meetmes.<br>
<br>
When I run a script to create 500 call files on box1, box2 starts complaining at 312 calls, logging 'Unable to open DAHDI pseudo channel: Cannot allocate memory' on the console.<br>
<br>
>From the 'callers perspective' the call is dropped between 'There are currently x other participants in the conference' and the 'beep-beep.'<br>
<br>
'top' says Asterisk is only using about 1/2 gigabyte of RAM.<br>
<br>
'top' says Asterisk is using about 250% of the CPU (4 physical, 8 logical cores).<br>
<br>
'ulimit' (added to /usr/sbin/safe_asterisk in the run_asterisk() function) says the open file limit is 397,006.<br>
<br>
'ls -l /proc/$(cat /var/run/asterisk/asterisk.<u></u>pid)/fd | wc -l' says Asterisk only has 2,194 files open.<br>
<br>
'iftop' sees about 24Mb of bandwidth in each direction between the boxes.<br>
<br>
Using confbridge() I can easily get 3,000 calls (14,869 open files, 180Mb bandwidth), but I'd lose some functionality and have to re-write parts of my application.<br>
<br>
Any clues of what limit I'm hitting and how to increase it?<br>
<br>
-- <br>
Thanks in advance,<br>
------------------------------<u></u>------------------------------<u></u>-------------<br>
Steve Edwards <a href="mailto:sedwards@sedwards.com" target="_blank">sedwards@sedwards.com</a> Voice: <a href="tel:%2B1-760-468-3867" value="+17604683867" target="_blank">+1-760-468-3867</a> PST<br>
Newline Fax: <a href="tel:%2B1-760-731-3000" value="+17607313000" target="_blank">+1-760-731-3000</a><span class="HOEnZb"><font color="#888888"><br>
<br>
<br>
-- <br>
Thanks in advance,<br>
------------------------------<u></u>------------------------------<u></u>-------------<br>
Steve Edwards <a href="mailto:sedwards@sedwards.com" target="_blank">sedwards@sedwards.com</a> Voice: <a href="tel:%2B1-760-468-3867" value="+17604683867" target="_blank">+1-760-468-3867</a> PST<br>
Newline Fax: <a href="tel:%2B1-760-731-3000" value="+17607313000" target="_blank">+1-760-731-3000</a><br>
<br>
-- <br>
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