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

[Dan Lane]

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
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>>>>
>>>>
>>>> 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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>>>>
>>>
>>>
>>> --
>>>
>>> ----=======================----
>>> Frank Park
>>> Telonium Communications, LLC
>>> frank at telonium.com
>>> http://www.telonium.com
>>> Follow Us on Twitter: @GetTelonium
>>> 404-566-8888 x1001 Office
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>>>
>>
>>
>>
>
>
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