[Freeswitch-users] Choppy VM when using loopback (on Debian lenny)

Thu Feb 3 21:28:37 MSK 2011

Thanks, I will test tomorrow.

I'm wondering if I could use att_xfer with loopbacks after these patches:D

2011/2/3 Anthony Minessale <anthony.minessale at gmail.com>:
> commit fb66abfab4a74055c38cdc67da83e6e0175a4a0b
> Author: Anthony Minessale <anthm at freeswitch.org>
> Date:   Tue Feb 1 16:22:36 2011 -0600
>
> this is the one you need at a bare minimum.
>
> If you are still having problems the most likely cause is ptime
> mismatch between the 2 ends of the call.
> you cannot leave loopback in the call path when the legs are not on
> the same ptime with very good results.
>
>
> On Thu, Feb 3, 2011 at 4:31 AM, Dmitry Sytchev <kbdfck at gmail.com> wrote:
>> We faced same trouble with FreeSWITCH Version 1.0.head (git-33848eb
>> 2011-02-01 08-56-26 +0100), the problem persists with loopback
>> channels. Even if two sip endpoints are bridged via loopback, sound is
>> choppy.
>>
>> We have bridge_early_media=true on loopback channel bridge command and
>> loopback_bowout=false, loopback_bowout_on_execute=false
>>
>> 2011/2/2 Dan Lane <null at invalid.name>:
>>> This seems to have resolved the issue for us :)
>>>
>>> Thanks.
>>>
>>> On Tue, Feb 1, 2011 at 8:47 PM, Anthony Minessale
>>> <anthony.minessale at gmail.com> wrote:
>>>> Try the latest GIT, I reverted the last patch and tried to solve the
>>>> problem differently.
>>>>
>>>>
>>>> On Tue, Feb 1, 2011 at 2:11 PM, Dan Lane <null at invalid.name> wrote:
>>>>> Yes, using 1f1541b our calls that use mod_loopback into mod_conference
>>>>> are unusable. The audio is choppy and delay increases as time passes.
>>>>>
>>>>> I thought it was an issue relating to the default 100Hz kernel on EC2
>>>>> so I spent some time yesterday putting together a 1000Hz kernel but it
>>>>> didn't make any difference. In the meantime I've compiled mod_loopback
>>>>> from 4c5426f and loaded it with my 1f1541b build which eliminates the
>>>>> issue.
>>>>>
>>>>> I haven't added it to Jira yet as I want to spend some time debugging
>>>>> it (and I also owe you some debug info for FS-2934) but the problem is
>>>>> definitely there.
>>>>>
>>>>> On Tue, Feb 1, 2011 at 3:58 PM, Anthony Minessale
>>>>> <anthony.minessale at gmail.com> wrote:
>>>>>> Are you saying you have better results on that version than you do on
>>>>>> the latest?
>>>>>> What conditions do you have that cause you trouble, what is the
>>>>>> endpoint on the other side.
>>>>>>
>>>>>> If the last commit to mod_loopback intended to improve audio quality
>>>>>> actually makes it worse I need to investigate it.
>>>>>>
>>>>>>
>>>>>> On Tue, Feb 1, 2011 at 5:53 AM, Dan Lane <null at invalid.name> wrote:
>>>>>>> FWIW we've been also been having audio issues with loopback recently
>>>>>>> on EC2 (with a 1000Hz kernel).
>>>>>>>
>>>>>>> We worked around it in the short term by reverting mod_loopback to
>>>>>>> git-4c5426f during the build process.
>>>>>>>
>>>>>>> For anyone else who wants to try this just run "git checkout 4c5426f"
>>>>>>> in src/mod/endpoints/mod_loopback then build as usual. This is NOT a
>>>>>>> long term solution though.
>>>>>>>
>>>>>>> On Mon, Jan 31, 2011 at 8:02 AM, Øyvind Albrigtsen <oa at estation.dk> wrote:
>>>>>>>> Thanks for all your feedback. I'll keep on trying and inform you what
>>>>>>>> worked for me.
>>>>>>>>
>>>>>>>>
>>>>>>>> Regards
>>>>>>>> Oyvind
>>>>>>>>
>>>>>>>> On 2011-01-29 21:48, Anthony Minessale wrote:
>>>>>>>>> Everyone should try latest GIT before pondering any further because I
>>>>>>>>> added a patch like 2 days ago to adress this issue.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Sat, Jan 29, 2011 at 2:12 PM, Frank Park<frank at telonium.com>  wrote:
>>>>>>>>>
>>>>>>>>>> Yeah. I, too, don't see the correlation between the NTP and hw timer..
>>>>>>>>>> I am not familiar with the timer_test command and what it's measuring, but
>>>>>>>>>> of the 50 tests it ran, min is 19089 and max is 20713.
>>>>>>>>>> Frank
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Fri, Jan 28, 2011 at 2:33 PM, David Ponzone<david.ponzone at ipeva.fr>
>>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>>> Frank,
>>>>>>>>>>> I fail to see the relationship between the hw timer and NTP.
>>>>>>>>>>> Can you please elaborate ?
>>>>>>>>>>> David Ponzone  Direction Technique
>>>>>>>>>>> email: david.ponzone at ipeva.fr
>>>>>>>>>>> tel:      01 74 03 18 97
>>>>>>>>>>> gsm:   06 66 98 76 34
>>>>>>>>>>> Service Client IPeva
>>>>>>>>>>> tel:      0811 46 26 26
>>>>>>>>>>> www.ipeva.fr  -   www.ipeva-studio.com
>>>>>>>>>>> Ce message et toutes les pièces jointes sont confidentiels et établis à
>>>>>>>>>>> l'intention exclusive de ses destinataires. Toute utilisation ou diffusion
>>>>>>>>>>> non autorisée est interdite. Tout message électronique est susceptible
>>>>>>>>>>> d'altération. IPeva décline toute responsabilité au titre de ce message s'il
>>>>>>>>>>> a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce
>>>>>>>>>>> message, merci de le détruire immédiatement et d'avertir l'expéditeur.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Le 28/01/2011 à 19:49, Frank Carmickle a écrit :
>>>>>>>>>>>
>>>>>>>>>>> Hi
>>>>>>>>>>>
>>>>>>>>>>> On Jan 28, 2011, at 7:39 AM, Øyvind Albrigtsen wrote:
>>>>>>>>>>>
>>>>>>>>>>> Hi,
>>>>>>>>>>>
>>>>>>>>>>> I'm using latest git-version of Freeswitch, and when I go to voicemail
>>>>>>>>>>>
>>>>>>>>>>> when calling a number the sound playback is choppy and it skips some of
>>>>>>>>>>>
>>>>>>>>>>> the digits in the number I called.
>>>>>>>>>>>
>>>>>>>>>>> What kind of results do you get from timer_test at the fs_cli?  Are you
>>>>>>>>>>> running on hardware or are you virtualized?  What is your clock source set
>>>>>>>>>>> to and what are your available clock source options?  See
>>>>>>>>>>> /sys/devices/system/clocksource/clocksource0/available_clocksource and
>>>>>>>>>>> /sys/devices/system/clocksource/clocksource0/current_clocksource.  I am
>>>>>>>>>>> running virtualized with the 2.6.26-2-xen-amd64 and I can get timer_test to
>>>>>>>>>>> hang at 19998/19999 which works very well for me.  When I was having problem
>>>>>>>>>>> it was reporting numbers all over the map from 17400 to 22600 with lots of
>>>>>>>>>>> randomness in between.  I have my clocksource set to jiffies and xen
>>>>>>>>>>> independent wallclock set to 1.  Of course at that point you need to have
>>>>>>>>>>> ntp running against a bunch of servers to drive your clock nice and steady.
>>>>>>>>>>>   I know my set up is probably a lot different than yours but I thought I'd
>>>>>>>>>>> toss it out there to show that some of the harshest conditions can be dealt
>>>>>>>>>>> with and don't give up trying.  If you are running on hardware with a cpu
>>>>>>>>>>> that doesn't have constant_tsc then you might have some problems.  Just play
>>>>>>>>>>> with the different timer options until you find the one that works.
>>>>>>>>>>>
>>>>>>>>>>> HTH
>>>>>>>>>>> --FC
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> 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
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> 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
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>>
>>>>>>>>>> ----=======================----
>>>>>>>>>> Frank Park
>>>>>>>>>> Telonium Communications, LLC
>>>>>>>>>> frank at telonium.com
>>>>>>>>>> http://www.telonium.com
>>>>>>>>>> Follow Us on Twitter: @GetTelonium
>>>>>>>>>> 404-566-8888 x1001 Office
>>>>>>>>>> 404-939-4242 Cell
>>>>>>>>>> ----=======================----
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> 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
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> FreeSWITCH-users mailing list
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>>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>> http://www.freeswitch.org
>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> FreeSWITCH-users mailing list
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>>>>>>> http://www.freeswitch.org
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> 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
>>>>>> sip:888 at conference.freeswitch.org
>>>>>> googletalk:conf+888 at conference.freeswitch.org
>>>>>> pstn:+19193869900
>>>>>>
>>>>>> _______________________________________________
>>>>>> FreeSWITCH-users mailing list
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>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>> http://www.freeswitch.org
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> FreeSWITCH-users mailing list
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>>>>> http://www.freeswitch.org
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> 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
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>>>>
>>>> FreeSWITCH Developer Conference
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>>>> googletalk:conf+888 at conference.freeswitch.org
>>>> pstn:+19193869900
>>>>
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>>>>
>>>
>>> _______________________________________________
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>>>
>>
>>
>>
>> --
>> Best regards,
>>
>> Dmitry Sytchev,
>> IT Engineer
>>
>> _______________________________________________
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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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> googletalk:conf+888 at conference.freeswitch.org
> pstn:+19193869900
>
> _______________________________________________
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>

-- 
Best regards,

Dmitry Sytchev,
IT Engineer