[Freeswitch-users] Conference vs codec sample rate and CPU
Stanislav Sinyagin
ssinyagin at gmail.com
Thu Oct 8 00:19:21 MSD 2015
You can also use park to connect two users, and use eavesdrop when you need
to connect the third one
On Oct 7, 2015 9:56 PM, "Oleg Stolyar" <olegstolyar at gmail.com> wrote:
> Basically I am willing to burn some extra electricity for the ability to
> have other people easily join the call, automatically record when a second
> person joins and other features I get from conference for free (or at least
> at the cost of extra electricity)
>
> Besides, all my calls from both internal and external users are incoming,
> so if I did not use conference, I would have to use park and I am not sure
> that a common codec could be negotiated in this case.
>
>
>
> On Wed, Oct 7, 2015 at 12:31 PM, Michael Jerris <mike at jerris.com> wrote:
>
>> If you only have 2 calls, why not just bridge them instead of having all
>> the extra overhead of a conference? Also, if you have only 2 people, one
>> is wideband and the other narrow, you get no benefit other than you get to
>> create a bit more extra heat and use some more electricity. If this was a
>> bridged call, you could negotiate common codecs.
>>
>> On Oct 7, 2015, at 2:12 PM, Oleg Stolyar <olegstolyar at gmail.com> wrote:
>>
>> Yes, it's almost always one internal and one external user.
>>
>> On Wed, Oct 7, 2015 at 12:00 PM, Michael Jerris <mike at jerris.com> wrote:
>>
>>> I think down is a bit cheaper cpu than up, but also, do you have the
>>> same number of internal and external users?
>>>
>>> On Oct 7, 2015, at 11:09 AM, Oleg Stolyar <olegstolyar at gmail.com> wrote:
>>>
>>> Interestingly, when I switched my conferences from 8000 to 16000 sample
>>> rate and left the codecs at G722 for internal users and G711 for external,
>>> the CPU usage went down by as much as 15%.
>>>
>>> Is there an explanation for this?
>>>
>>> On Wed, Oct 7, 2015 at 7:53 AM, Oleg Stolyar <olegstolyar at gmail.com>
>>> wrote:
>>>
>>>> Thanks guys!
>>>>
>>>> On Wed, Oct 7, 2015 at 5:58 AM, Steven Ayre <steveayre at gmail.com>
>>>> wrote:
>>>>
>>>>> http://tools.ietf.org/html/rfc3551
>>>>>
>>>>> Even though the actual sampling rate for G.722 audio is 16,000 Hz,
>>>>> the RTP clock rate for the G722 payload format is 8,000 Hz because
>>>>> that value was erroneously assigned in RFC 1890 <http://tools.ietf.org/html/rfc1890> and must remain
>>>>> unchanged for backward compatibility. The octet rate or sample-pair
>>>>> rate is 8,000 Hz.
>>>>>
>>>>>
>>>>> On 7 October 2015 at 00:01, Michael Jerris <mike at jerris.com> wrote:
>>>>>
>>>>>> G722/8000 is actually 16k not 8, an accident of history...
>>>>>>
>>>>>>
>>>>>> On Tuesday, October 6, 2015, Oleg Stolyar <olegstolyar at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Yeah but Chrome seems to only be offering G722 at 8000
>>>>>>> a=rtpmap:9 G722/8000
>>>>>>>
>>>>>>> Am I reading this correctly?
>>>>>>>
>>>>>>> On Tue, Oct 6, 2015 at 3:32 PM, Anthony Minessale <
>>>>>>> anthony.minessale at gmail.com> wrote:
>>>>>>>
>>>>>>>> G722 is actually 16khz which can pass for hd
>>>>>>>> isac will do higher sample rates as well like 16 and 32 but it will
>>>>>>>> probably also be cpu intensive.
>>>>>>>>
>>>>>>>>
>>>>>>>> On Tue, Oct 6, 2015 at 5:17 PM, Giovanni Maruzzelli <
>>>>>>>> gmaruzz at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> With browsers/webrtc I believe your choice is only between opus
>>>>>>>>> and g711
>>>>>>>>>
>>>>>>>>> sent from my mobile,
>>>>>>>>> Giovanni Maruzzelli
>>>>>>>>> cell: +39 347 266 56 18
>>>>>>>>> On Oct 7, 2015 12:04 AM, "Oleg Stolyar" <olegstolyar at gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> My endpoint is Chrome/WebRTC. Here is what the current version
>>>>>>>>>> sends in the the INVITE.
>>>>>>>>>>
>>>>>>>>>> Doesn't look like G722/16000 is there. How is ISAC in terms of
>>>>>>>>>> CPU consumption?
>>>>>>>>>>
>>>>>>>>>> a=rtpmap:111 opus/48000/2
>>>>>>>>>> a=fmtp:111 minptime=10; useinbandfec=1
>>>>>>>>>> a=rtpmap:103 ISAC/16000
>>>>>>>>>> a=rtpmap:104 ISAC/32000
>>>>>>>>>> a=rtpmap:9 G722/8000
>>>>>>>>>> a=rtpmap:0 PCMU/8000
>>>>>>>>>> a=rtpmap:8 PCMA/8000
>>>>>>>>>> a=rtpmap:106 CN/32000
>>>>>>>>>> a=rtpmap:105 CN/16000
>>>>>>>>>> a=rtpmap:13 CN/8000
>>>>>>>>>> a=rtpmap:126 telephone-event/8000
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Tue, Oct 6, 2015 at 1:49 PM, Stanislav Sinyagin <
>>>>>>>>>> ssinyagin at gmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> If your endpoint supports it, G722 at 16000h gives a very decent
>>>>>>>>>>> voice quality. SILK also supports 16KHz.
>>>>>>>>>>>
>>>>>>>>>>> here's some information related to codec complexity:
>>>>>>>>>>>
>>>>>>>>>>> https://txlab.wordpress.com/2015/04/10/testing-freeswitch-performance-on-scaleway-c1/
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Tue, Oct 6, 2015 at 10:40 PM, Oleg Stolyar <
>>>>>>>>>>> olegstolyar at gmail.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Thanks guys!
>>>>>>>>>>>>
>>>>>>>>>>>> Anthony, using your suggestion means that I won't have HD
>>>>>>>>>>>> voice, correct? HD voice is the primary reason I am considering OPUS
>>>>>>>>>>>> instead of G.722.
>>>>>>>>>>>>
>>>>>>>>>>>> Is there some codec/setting that will let me have HD voice for
>>>>>>>>>>>> less CPU and perhaps more bandwidth?
>>>>>>>>>>>>
>>>>>>>>>>>> It's not a must - I can scale up if needed, just wondering.
>>>>>>>>>>>>
>>>>>>>>>>>> On Tue, Oct 6, 2015 at 1:35 PM, Anthony Minessale <
>>>>>>>>>>>> anthony.minessale at gmail.com> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> typo: opus at 8000h@20i
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Tue, Oct 6, 2015 at 3:33 PM, Stanislav Sinyagin <
>>>>>>>>>>>>> ssinyagin at gmail.com> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> OPUS is an expensive codec, so any conversion between OPUS and
>>>>>>>>>>>>>> uncompressed audio is CPU-consuming. I don;t think that
>>>>>>>>>>>>>> resampling
>>>>>>>>>>>>>> would play much of a role in CPU consumption.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On Tue, Oct 6, 2015 at 10:29 PM, Oleg Stolyar <
>>>>>>>>>>>>>> olegstolyar at gmail.com> wrote:
>>>>>>>>>>>>>> > Hi guys,
>>>>>>>>>>>>>> >
>>>>>>>>>>>>>> > I have a bunch of conferences on my FS. Users are either
>>>>>>>>>>>>>> G.711/8000 or
>>>>>>>>>>>>>> > G.722/8000. Conference sample rate is set to 8000.
>>>>>>>>>>>>>> >
>>>>>>>>>>>>>> > When I switched some users to OPUS instead, the CPU
>>>>>>>>>>>>>> consumption jumped 3-4
>>>>>>>>>>>>>> > times even though the conference rate is still 8000. Is
>>>>>>>>>>>>>> this expected?
>>>>>>>>>>>>>> >
>>>>>>>>>>>>>> > I was hoping to be able to save some CPU by setting the
>>>>>>>>>>>>>> conference sample
>>>>>>>>>>>>>> > rate to auto (so it only used high-quality sampling for
>>>>>>>>>>>>>> users that can
>>>>>>>>>>>>>> > support it) but it seems it won't work. Any ideas?
>>>>>>>>>>>>>> >
>>>>>>>>>>>>>> >
>>>>>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>>>>>> > 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
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>>>>>>>>>>>>>> http://www.freeswitch.org
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> --
>>>>>>>>>>>>> Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬
>>>>>>>>>>>>>
>>>>>>>>>>>>> ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞
>>>>>>>>>>>>> http://twitter.com/FreeSWITCH
>>>>>>>>>>>>> ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+
>>>>>>>>>>>>> <http://freeswitch.org/g+>*
>>>>>>>>>>>>>
>>>>>>>>>>>>> ClueCon Weekly Development Call
>>>>>>>>>>>>> ☎ sip:888 at conference.freeswitch.org ☎ +19193869900
>>>>>>>>>>>>>
>>>>>>>>>>>>> ClueCon Testimonials
>>>>>>>>>>>>> <https://www.youtube.com/watch?v=9XXgW34t40s>
>>>>>>>>>>>>> ClueCon This Summer
>>>>>>>>>>>>> <https://www.youtube.com/watch?v=NLaDpGQuZDA>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>>>>> 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
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>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>>>> 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
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>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>>> 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
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>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _________________________________________________________________________
>>>>>>>>>> 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
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>>>>>>>>>> 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
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>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬
>>>>>>>>
>>>>>>>> ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞
>>>>>>>> http://twitter.com/FreeSWITCH
>>>>>>>> ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+
>>>>>>>> <http://freeswitch.org/g+>*
>>>>>>>>
>>>>>>>> ClueCon Weekly Development Call
>>>>>>>> ☎ sip:888 at conference.freeswitch.org ☎ +19193869900
>>>>>>>>
>>>>>>>> ClueCon Testimonials <https://www.youtube.com/watch?v=9XXgW34t40s>
>>>>>>>> ClueCon This Summer <https://www.youtube.com/watch?v=NLaDpGQuZDA>
>>>>>>>>
>>>>>>>>
>>>>>>>> _________________________________________________________________________
>>>>>>>> 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
>>>>>>>>
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>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _________________________________________________________________________
>>>>>> 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
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>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _________________________________________________________________________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>>
>>>>> Official FreeSWITCH Sites
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>>>>> http://www.cluecon.com
>>>>>
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>>>>>
>>>>
>>>>
>>> _________________________________________________________________________
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>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
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>>>
>>>
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
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>>>
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>>
>> _________________________________________________________________________
>> 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
>>
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>>
>>
>>
>> _________________________________________________________________________
>> 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
>>
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>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
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>>
>
>
> _________________________________________________________________________
> 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
>
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>
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