[Freeswitch-users] Conference vs codec sample rate and CPU

Wed Oct 7 23:12:49 MSD 2015

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
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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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>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> 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
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>>>>>>>>>>>
>>>>>>>>>>> ClueCon Testimonials
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>>>>>>>>>>> ClueCon This Summer
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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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>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _________________________________________________________________________
>>>>>>>> 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
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>>>>>>> http://www.cluecon.com
>>>>>>>
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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
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>>>>>> http://www.cluecon.com
>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>
>>>> _________________________________________________________________________
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>>>> http://www.freeswitchsolutions.com
>>>>
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>>>
>>>
>>> _________________________________________________________________________
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>>>
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>>
>>
> _________________________________________________________________________
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>
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>
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>
>
>
> _________________________________________________________________________
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>
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>
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