[Freeswitch-users] How many concurrent calls

Fri Sep 15 01:50:42 EDT 2006

Is it stablee .. as of yetr
-----Original message-----
From: "Muhammad Shahzad" shaheryarkh at googlemail.com
Date: Sat, 23 Sep 2006 01:20:06 +1000
To: freeswitch-users at lists.freeswitch.org
Subject: Re: [Freeswitch-users] How many concurrent calls

> Hi Everyone,
> 
> Sorry i was out-station and extremely busy for last couple of weeks or so,
> therefore, i couldn't reply earlier. Anyways, here is some data regarding
> our testing of FreeSWITCH conducted at a NOC in Lahore, Pakistan,
> 
> Setup:
> 1. We setup two servers of same hardware i.e. *Fujitsu Siemens Xeon *3.2 GHz,
> each running Gentoo Linux 2006.0 with kernels 2.6.15-r8 and
> 2.6.17-r5respectively.
> 2. These servers were then connected over cross-line cable to each other
> using Gigabit NICs.
> 3. We installed Asterisk version 1.2.10 on machine 'A' and FreeSWITCH
> snapshot dated 2006-09-01 on machine 'B'.
> 4. Each machine had another Gigabit NIC through which it was connect to
> Internet, so that i can access them remotely.
> 5. I was connected to these servers over 100kbs CDMA wireless Internet link
> via ssh.
> 6. Date was Sept. 02, 2006, 0300hours PKST (GMT+5 zone).
> 
> Test Plan I: (Simple Playback)
> We generated batches of 100, 200, 300, 400 and 500 calls, with steps 25, 50,
> 100 calls dialed simultaneously at an interval of 10 seconds. Each call
> plays a flat tone of one minute length, file format WAV, codec GSM.
> 
> Maximum concurrent calls should be,
> 
>   X   |  25          50          100  (steps)
> ------------------------------------------
> 100 | 100        100         100
> 200 | 150        200         200
> 300 | 150        250         300
> 400 | 150        250         400
> 500 | 150        250         500
> (Test Matrix: Fixed interval of 10 seconds)
> 
> In this plan number of calls equal number of active IAX2 channels. Maximum
> time for maxium concurrent calls was between 9 and 10 seconds.
> 
> Results:
> All batches successfully executed, however at 400 or above concurrent calls
> the load averge shoot to over 5.6 and FreeSWITCH console was showing call
> details so fast that my remote ssh link hanged. When the link resumed the
> FreeSWITCH was still up and number of calls were decreasing as the test was
> moving towards end.
> 
> Test Plan II: (Forward Bridged Calls)
> 1. We generated same batches of calls except that now they dials out to
> Machine A (the one running Asterisk). That machine accepts the call and
> plays back a milliwatt for 1 minute, codec GSM.
> 
> 2. Since calls were bridged so number of calls were half the number of
> channels.
> 
> Results:
> At 436 active channels (218 concurrent calls) Asterisk crashes and therefore
> all calls dropped.
> 
> Test Plan III: (Reverse Bridged Calls)
> 1. Same as plan II, except now we generated calls from Machine A (i.e.
> Asterisk) and Machine B (i.e. FreeSWITCH) answers the call and plays back
> flat tone of 1 minute length (file format WAV, codec GSM)
> 
> 2. Since calls were bridged so number of calls were half the number of
> channels.
> 
> Results:
> At 394 active channels (197 concurrent calls) FreeSWITCH crashes and
> therefore all calls dropped.
> 
> Warning:
> These tests may not exhibit same results in all environments, we did not
> follow any specific testing standard nor we endorse any software or hardware
> used in these tests.
> 
> I wanted to decrease the interval as well as call steps to get more exact
> information on how and when FreeSWITCH and asterisk crashes but i had to
> abandon further plans due to bad weather (i was using wireless link which
> went down).
> 
> Now i am planing for FreeSWITCH to FreeSWITCH bridged calls testing, i will
> send you the results whenever i got those servers available to me.
> 
> Thanks and best regards.
> 
> -shahzad
> 
> 
> On 9/4/06, Brian West <brian.west at mac.com> wrote:
> >
> > Was this 500 bridged calls?  or 250 bridged calls? or 500 going to
> > playback?
> > /b
> >
> > On Sep 3, 2006, at 5:05 PM, Muhammad Shahzad wrote:
> >
> > Not sure, but i think that depends on your hardware. Freeswitch has no
> > such built-in limitation on number of concurrent calls.
> >
> > We have tested it upto 500 concurrent IAX2 calls on an Intel Xeon 3.2 GHz
> > machine with 2.0GB of RAM. :-)
> >
> > -shahzad.
> >
> >
> > On 9/2/06, Kamran Ahmad <kamranah at gmail.com> wrote:
> > >
> > >  HI
> > >
> > > How many concurrent calls are supported by freeswitch on linux or
> > > windows ? any idea?
> > >
> > > Thanks
> > > Kamran
> > >
> > >
> > >
> > >
> > >
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> > >
> >
> >
> > --
> > Muhammad Shahzad
> > -------------------------------
> > Manager Support,
> > Convergence Business Systems,
> > Lahore, Pakistan.
> > Cell: 0092 334 422 40 88
> > Email: shaheryarkh at googlemail.com
> > _______________________________________________
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> 
> 
> -- 
> Muhammad Shahzad
> -------------------------------
> Manager Support,
> Convergence Business Systems,
> Lahore, Pakistan.
> Cell: 0092 334 422 40 88
> Email: shaheryarkh at googlemail.com
>