[asterisk-users] Asterisk Capacity

[Geraint Lee]

Thanks for that, it's pretty much confirming what i first anticipated... my
intentions are as follows:

agents register with opensips, opensips clusters a set of call recording
servers which then connect to our border servers which will save cdr and
choose the sip/iax provider to send the call to.

and for my predictive dialer, each server will spool as many calls as they
can before i see performance issues when they have an answer they too will
connect to the opensips server to get a call recording server which in turn
will pass it on to the agent again via opensips.

simples :)

looks like i need to install and learn opensips since this whole scenario
seems to be heavily relying on it :)

Cheers

2009/4/23 z gringo <z_gringo at hotmail.com>

>  You don't say how many SIP registrations you are doing, but I have several
> servers with betwen 1000 and 1200 simultaneous registered users 24/7.   When
> we had the registrations in realtime (cached) with the mysql connector,
> everything started failing around 600 users.  With the ODBC connector we
> have not had that problem.  Ditto for putting the users in .conf files.  My
> servers all have around 300 to 400 simultaneous calls during peak periods,
> and I have a 1GB ramdisk for recordings.    We are only recording a tiny
> percentage of those calls.  MySQL is running on a separate server dedicated
> to Databases.  The asterisks connect to the realtime DB via a private
> network on a second nic.
>
> My thoughts are these:
> 1.  Asterisk is not going to be able to handle much more registration
> traffic than around 1200 registered users. (this depends on a whole lot of
> things though).  Eventually, it will need to be offloaded to something like
> OpenSIPs
> 2.  Somewhere around 800 simultaneous calls is about the most asterisk is
> going to be able to push.
> 3.  Your problem is going to be the call recording.  If you are trying to
> record all the calls on your server or even a large percentage of them, that
> is going to be your first problem area.
>
> Another important thing to consider is how many calls you are setting up
> and tearing down each second.   If you have a bunch of users dialing
> manually and making long calls, that will be a lot easier to handle than if
> you have 3 predictive dialers running against your server trying to bring up
> 30 calls per second.  If you are doing something like that, you will
> probably need to distribute accross multiple servers.
>
>
>
> ------------------------------
> Date: Thu, 23 Apr 2009 12:12:35 +0100
> From: geraint at gmail.com
> To: asterisk-users at lists.digium.com
> Subject: [asterisk-users] Asterisk Capacity
>
>
> Hi Guys,
>
> I have a strong feeling the loads on my servers will be shooting up soon...
> anyone got any idea how many calls i can expect to put through a
> DL360:
> Dual Quad Core 2.33ghz
> 4gb RAM with 1gb allocated for a ramdisk (call recordings)
>
> This server is recording calls (mixmonitor), codec is gsm (no conversion).
>
> I know there's a lot of other things to consider like AGI scripts and such
> things but i'd like to know what the capacity should be simply for sip
> registrations (which are in conf files) and calls (usually between 20 and 60
> concurrent calls at present (around 12,000 calls a day - so relatively low
> volume). No voicemail or meetme.
>
> I expect to be pushing 300-400 concurrent calls within the next 2 months.
>
> Next question... do i need to be looking at openSIPS or something similar
> to handle registrations?
>
> Any hints, tips and things to watch out for with a larger volume would be
> great.
>
> Cheers
>
> Geraint
>
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