[Freeswitch-users] Question about large confeerence

Fri Apr 20 17:42:13 UTC 2018

This won't help much but here's our experience.
Had a similar requirement and posted here last year about it. Luckily my
needs were for fewer listeners (30-50) and running them all in
mod_conference (with listeners muted) was feasible. But it's not elegant
(if it's indeed the case) that all listeners have a jitter buffer and audio
decoder that's being allocated but not being used when muted.
The upside is we could implement a "barge in" function to allow listeners
to join the conference via DTMF PIN. For our application it's not a risk
and it's a neat feature.

On Fri, Apr 20, 2018 at 1:29 PM, Abaci B <abaci64 at gmail.com> wrote:

> I do understand that the way mod_conference work it is not efficient for
> my use case, my question is about the best alternative.
> Streaming would be ideal if it wouldn't be for the latency, since users
> need to be able to switch to talk mode there is no way a latency of 5-10
> seconds (or possibly more) is acceptable.
> Another option is to use eavesdrop which I plan on testing next week to
> see if it scales, if someone has any input on it I would appreciate.
> The next option would be to optimize mod_conference for this use case, I
> started looking at the code and identified some places that performance can
> be optimized but may need to hire someone with better C skills to do the
> actual coding.
> another possibility may be, to use an RTP proxy that would just distribute
> the RTP to all callers, this would give the best performance but would
> limit features.
> Last option would be to develop a new module optimized for low latency
> streaming, but leave that as a last resort.
>
> On Fri, Apr 20, 2018 at 1:15 PM, Tihomir Culjaga <tculjaga at gmail.com>
> wrote:
>
>> a conference with 1000 members demands huge resources... and this is not
>> efficient if only 2-5% of members will actually talk.
>> you need to keep the actual conference to the minimum number of
>> "speakers" and move listeners to a streaming "service".
>>
>> so, focus on how to get your entire conference streamed somewhere.
>>
>> another thing to consider.... do the "listeners" really need to be in
>> time sync with the conference ? They will just hear the conversation from
>> the conference a bit later... thats all.
>>
>> T.
>>
>>
>>
>>
>>
>>
>> On 20 April 2018 at 14:43, Abaci B <abaci64 at gmail.com> wrote:
>>
>>> problem with shoutcast streaming is the extreme latency
>>>
>>> On Fri, Apr 20, 2018 at 1:30 AM, Giovanni Maruzzelli <gmaruzz at gmail.com>
>>> wrote:
>>>
>>>> you definitely want to have only the speakers into conference, and
>>>> stream to all others.
>>>>
>>>> -giovanni
>>>>
>>>> On 19 April 2018 at 23:37, Abaci B <abaci64 at gmail.com> wrote:
>>>>
>>>>> I was thinking that the muted flag (CAN_SPEAK?) is something that can
>>>>> change mid conference which means there is a chance of loosing a single
>>>>> frame (the last one right before muting). I was more interested in knowing
>>>>> as far as performance if it makes sense.
>>>>> not sure if this is safe but something like only starting
>>>>> conference_loop_launch_input if that flag is not set.
>>>>> I still wish there would be module that would do exactly this
>>>>> (something like shoutcast but local and without the shoutcast latency)
>>>>>
>>>>> On Thu, Apr 19, 2018 at 5:19 PM, Steven Ayre <steveayre at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> There's already a muted flag you could use for that.
>>>>>>
>>>>>> On 19 April 2018 at 20:55, Abaci B <abaci64 at gmail.com> wrote:
>>>>>>
>>>>>>> Thanks for the reply.
>>>>>>> Another idea I'm thinking of is to add a LISTEN_ONLY mflag to
>>>>>>> mod_conference and only run conference_loop_input thread on channels that
>>>>>>> don't have this flag, that way I don't need to set up a shoutcast server
>>>>>>> and have everything contained within freeswitch, does that make sense?
>>>>>>>
>>>>>>> On Thu, Apr 19, 2018 at 3:20 PM, Giovanni Maruzzelli <
>>>>>>> gmaruzz at gmail.com> wrote:
>>>>>>>
>>>>>>>> definitely conference with two participant, and 598 on localstream
>>>>>>>>
>>>>>>>> -giovanni
>>>>>>>>
>>>>>>>> On Thu, Apr 19, 2018, 18:38 Abaci B <abaci64 at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Hi,
>>>>>>>>> I'm trying to set up a large audio conference of over 1000 users
>>>>>>>>> where only 1 or 2 users are talking and the rest are just listening, but
>>>>>>>>> after 600-700 users the CPU usage gets too high and the audio gets choppy,
>>>>>>>>> I understand that mod_conference is not optimized for my use case but was
>>>>>>>>> wondering if someone has any suggestions on what can be done to optimize
>>>>>>>>> for my use case.
>>>>>>>>> I was also thinking that maybe there is a  better alternative for
>>>>>>>>> what I look for, such as having just the talkers on the conference and the
>>>>>>>>> listeners should listen to it via mod_local_stream or maybe use something
>>>>>>>>> like eavesdrop for the listeners but not sure if and how much performance I
>>>>>>>>> would gain.
>>>>>>>>> Thanks for any help or input
>>>>>>>>>
>>>>>>>>> ____________________________________________________________
>>>>>>>>> _____________
>>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>>> consulting at freeswitch.org
>>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>>
>>>>>>>>> Official FreeSWITCH Sites
>>>>>>>>> http://www.freeswitch.org
>>>>>>>>> http://confluence.freeswitch.org
>>>>>>>>> http://www.cluecon.com
>>>>>>>>>
>>>>>>>>> FreeSWITCH-users mailing list
>>>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/free
>>>>>>>>> switch-users
>>>>>>>>> http://www.freeswitch.org
>>>>>>>>
>>>>>>>>
>>>>>>>> ____________________________________________________________
>>>>>>>> _____________
>>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>>> consulting at freeswitch.org
>>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>>
>>>>>>>> Official FreeSWITCH Sites
>>>>>>>> http://www.freeswitch.org
>>>>>>>> http://confluence.freeswitch.org
>>>>>>>> http://www.cluecon.com
>>>>>>>>
>>>>>>>> FreeSWITCH-users mailing list
>>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/free
>>>>>>>> switch-users
>>>>>>>> http://www.freeswitch.org
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> ____________________________________________________________
>>>>>>> _____________
>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>> consulting at freeswitch.org
>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
>>>>>>> http://www.freeswitch.org
>>>>>>> http://confluence.freeswitch.org
>>>>>>> http://www.cluecon.com
>>>>>>>
>>>>>>> FreeSWITCH-users mailing list
>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/free
>>>>>>> switch-users
>>>>>>> http://www.freeswitch.org
>>>>>>>
>>>>>>
>>>>>>
>>>>>> ____________________________________________________________
>>>>>> _____________
>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>> consulting at freeswitch.org
>>>>>> http://www.freeswitchsolutions.com
>>>>>>
>>>>>> Official FreeSWITCH Sites
>>>>>> http://www.freeswitch.org
>>>>>> http://confluence.freeswitch.org
>>>>>> http://www.cluecon.com
>>>>>>
>>>>>> FreeSWITCH-users mailing list
>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/free
>>>>>> switch-users
>>>>>> http://www.freeswitch.org
>>>>>>
>>>>>
>>>>>
>>>>> ____________________________________________________________
>>>>> _____________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>>
>>>>> Official FreeSWITCH Sites
>>>>> http://www.freeswitch.org
>>>>> http://confluence.freeswitch.org
>>>>> http://www.cluecon.com
>>>>>
>>>>> FreeSWITCH-users mailing list
>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/free
>>>>> switch-users
>>>>> http://www.freeswitch.org
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Sincerely,
>>>>
>>>> Giovanni Maruzzelli
>>>> OpenTelecom.IT
>>>> cell: +39 347 266 56 18
>>>>
>>>> ____________________________________________________________
>>>> _____________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://confluence.freeswitch.org
>>>> http://www.cluecon.com
>>>>
>>>> FreeSWITCH-users mailing list
>>>> FreeSWITCH-users at lists.freeswitch.org
>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/free
>>>> switch-users
>>>> http://www.freeswitch.org
>>>>
>>>
>>>
>>> ____________________________________________________________
>>> _____________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://confluence.freeswitch.org
>>> http://www.cluecon.com
>>>
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> http://www.freeswitch.org
>>>
>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20180420/f716c729/attachment-0001.html>