[Freeswitch-users] mod_conference scalability

Thu Apr 19 21:20:46 UTC 2018

Hi,
Came across this thread wile having the exact same issue, do you mind
sharing some info about your solution?
Thanks

On Thu, Dec 17, 2009 at 4:06 PM, David Knell <dave at 3c.co.uk> wrote:

> Hi Brian,
>
> I imagine that one of the issues is that you're using a complex
> sledgehammer (mod_conference) to crack a simple nut - that of having
> multiple listeners listening to a single speaker.
>
> As far as I am aware, FreeSWITCH doesn't have anything built in which
> will allow this kind of simple audio path switching - maybe someone more
> knowledgeable than me will correct me if I'm wrong?
>
> I presented some stuff at ClueCon which would address this kind of
> simple application and ought to scale well beyond what you've seen with
> FS or Asterisk.  It's still pretty basic [I'd do more with it if I
> wasn't so busy joshing with the other Brian on Facebook], and has never
> been deployed in anger but, if you're interested, drop me a note
> off-list.
>
> --Dave
>
> > I didn’t realize there was a policy about load testing questions. What
> > forum should I have used for this?
> >
> >
> >
> > I didn’t get the chance to test on FS trunk yet, but when I do I will
> > provide you with the feedback when I do. Just let me know what forum
> > to use for this topic from now on.
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Brian.
> >
> >
> >
> > From: Anthony Minessale [mailto:anthony.minessale at gmail.com]
> > Sent: Thursday, December 17, 2009 2:42 PM
> > To: freeswitch-users at lists.freeswitch.org
> > Subject: Re: [Freeswitch-users] mod_conference scalability
> >
> >
> >
> >
> > One man's stable release is another man's 6 month old release with
> > hundreds of known fixed bugs.
> > If one of the core developers tells you to try it, you may as well
> > take the time to try it now that you have opened a forum questioning
> > the scalability.
> >
> > When you tested asterisk did you actually use 600 phones and verify
> > that each one can hear the audio perfectly and in time with what the
> > speaker was saying?  Did you try same on FS?
> >
> > Did you optimize your dialplan on FS to deal with a load test or
> > follow any of the recommended performance tuning page.
> >
> > All of the answers to these questions are really moot because we have
> > a policy against entertaining load testing questions but if you like
> > asterisk, by all means, use it, and good luck to you if those numbers
> > you are testing at are what you plan to put in real
> > production.........
> >
> >
> >
> > On Thu, Dec 17, 2009 at 1:29 PM, Brian <brian at proximosystems.com>
> > wrote:
> >
> > Hi Mike,
> >
> >
> >
> > I didn’t get around to testing on the FreeSWITCH trunk yet. Are there
> > substantial fixes to mod_conference in the FreeSWITCH trunk that might
> > increase capacity for my scenario of one speaker and many listeners?
> > If I want to put this into a production environment, I would need a
> > stable version, which as far as I know is the 1.0.4 version.
> >
> >
> >
> > However, I did test on Asterisk 1.4 using app_conference, and doing
> > the same scenario was able to get 1 speaker and 600 listeners on a
> > single conference with no audio issues. The CPU at that point was just
> > over 300%, same as where the single conference scenario failed on
> > FreeSWITCH with 300 listeners.  I was able to push it to over 700
> > listeners before I reached 400% CPU usage (I guess maxing out my
> > quad-core processors), and asterisk finally crashed. But up until that
> > point, there were no audio problems.
> >
> >
> >
> > I’ve read a lot about how FreeSWITCH is supposed to be more scalable
> > than Asterisk, but unless there is something wrong with my FreeSWITCH
> > setup, Asterisk was clearly the winner in this test – more than
> > doubling FreeSWITCH capacity in this case. Again, maybe there is
> > something on the FreeSWITCH side that I’m doing wrong, but I don’t see
> > what it could be.
> >
> >
> >
> > Brian.
> >
> >
> >
> >
> >
> > From: Michael Jerris [mailto:mike at jerris.com]
> > Sent: Thursday, December 17, 2009 10:18 AM
> > To: freeswitch-users at lists.freeswitch.org
> > Subject: Re: [Freeswitch-users] mod_conference scalability
> >
> >
> >
> >
> > I would be curious what the same tests produce with svn trunk of
> > FreeSWITCH.
> >
> >
> >
> >
> > Mike
> >
> >
> >
> >
> > On Dec 16, 2009, at 4:49 PM, Brian wrote:
> >
> >
> >
> >
> > Hi,
> >
> >
> >
> >
> >
> > I’m new to FreeSWITCH and I’m testing the scalability of
> > mod_conference to see if it will scale better that other solutions. My
> > scenario is to have one speaker, and many listeners (mute). Since I
> > have only one speaker, I was expecting this to scale well because
> > there is no audio mixing required, just send each frame of the single
> > speaker to each listener. Unfortunately, my testing was disappointing,
> > and it didn’t scale nearly as well as I’d hoped (based on what I’ve
> > read on how FreeSWITCH is supposed to be generally very scalable).
> >
> >
> >
> >
> >
> > Here’s my server setup is this:
> >
> >
> >
> >
> >
> > FreeSWITCH 1.0.4, 64 bit CentOS 5.3, on a quad-core Xeon server, 4 Gig
> > of RAM. I’ve set file logging to “notice” level. My conference profile
> > is configured to suppress several events, hoping that it would improve
> > performance.
> >
> >
> >
> >
> >
> > Here are a few scenarios I tested, and roughly where I reached the
> > point of audio failure on the conferences:
> >
> >
> >
> >
> >
> > Scenario 1:
> >
> >
> > 1 conference, 1 speaker, audio failed at approx 300 listeners (mute)
> >
> >
> >
> >
> >
> > Scenario 2:
> >
> >
> > 4 conferences, 1 speaker per conference, audio failed approx 110
> > listeners per conference (so just over 400 total channels on the
> > system).
> >
> >
> >
> >
> >
> > Scenario 3:
> >
> >
> > 16 conferences, 1 speaker per conference, audio failed at 32 listeners
> > per conference (so just over 500 total channels on the system).
> >
> >
> >
> >
> >
> >
> >
> >
> > Looking at the output from “top”, it seems that in all 3 scenarios,
> > the audio quality failed when the % CPU for the FreeSWITCH process
> > exceeded 300%.
> >
> >
> >
> >
> >
> > I was hoping maybe someone else might have done similar testing, or
> > maybe has suggestions on how to improve the performance. Or perhaps an
> > alternate solution to the one speaker, many listener case?
> >
> >
> >
> >
> >
> > Thanks,
> >
> >
> >
> >
> >
> > Brian.
> >
> >
> >
> >
> >
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> >
> >
> >
> >
> >
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> >
> >
> >
> >
> > --
> > Anthony Minessale II
> >
> > FreeSWITCH http://www.freeswitch.org/
> > ClueCon http://www.cluecon.com/
> > Twitter: http://twitter.com/FreeSWITCH_wire
> >
> > AIM: anthm
> > MSN:anthony_minessale at hotmail.com
> > GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
> > IRC: irc.freenode.net #freeswitch
> >
> > FreeSWITCH Developer Conference
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> >
> >
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>
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