On (21/03/14 13:54), Steve Totaro <[email protected]> put forth
the proposition:
I found below here: http://www.voip-info.org/wiki/view/Asterisk+cmd+MeetMe
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 *DAHDI linux limits the number
of open pseudo channels to 512 for this reason*. [1]
Thanks,
Steve T
[1] http://svn.asterisk.org/view/dahdi?view=revision&revision=9610
The new ConfBridge module in the upcoming Asterisk 1.10 release may not
have this limitation.
I'm using confbridge on asterisk 11.
On Fri, Mar 21, 2014 at 11:53 AM, Steve Edwards
<[email protected]>wrote:
I'm trying to determine the capacity of my host running Asterisk 11.8.1 on
CentOS 6.5.
The host is an Intel E3-1240v3 with 8GB RAM, an SSD, and gigabit Ethernet.
The primary application will be bridging groups of users using meetme().
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).
The call file on box1 originates a call to box2 and then plays a 2 hour
WAV file.
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.
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.
From the 'callers perspective' the call is dropped between 'There are
currently x other participants in the conference' and the 'beep-beep.'
'top' says Asterisk is only using about 1/2 gigabyte of RAM.
'top' says Asterisk is using about 250% of the CPU (4 physical, 8 logical
cores).
'ulimit' (added to /usr/sbin/safe_asterisk in the run_asterisk() function)
says the open file limit is 397,006.
'ls -l /proc/$(cat /var/run/asterisk/asterisk.pid)/fd | wc -l' says
Asterisk only has 2,194 files open.
'iftop' sees about 24Mb of bandwidth in each direction between the boxes.
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.
Any clues of what limit I'm hitting and how to increase it?
--
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards [email protected] Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
--
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards [email protected] Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
--
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