[Freeswitch-users] Choppy VM when using loopback (on Debian lenny)
frank at carmickle.com
Fri Jan 28 21:49:51 MSK 2011
On Jan 28, 2011, at 7:39 AM, Øyvind Albrigtsen wrote:
> 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.
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