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

Tue Feb 1 18:58:23 MSK 2011

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
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>>>>> 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
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> ----=======================----
>>>> 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
>>>> ----=======================----
>>>>
>>>>
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>>>>
>>>>
>>>
>>>
>>>
>>
>>
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>
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-- 
Anthony Minessale II

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