Robert McGilvray wrote:
Thanks Joshua. We're talking about pretty long gaps in the audio, probably around 10-15 seconds which is quite a bit of missed ticks at 20ms sampling. I was poking around the timing code trying to get a better understanding of things and found that Asterisk uses timerfd_create with CLOCK_MONOTONIC as the clock. The man page states CLOCK_MONOTONIC is affected by incremental adjustments to the time made by things like NTP. I may be completely off track here but would something like vmtools that tries to correct the clock skew (caused by VMware) be causing some issues here? Meaning that if asterisk calls timerfd_create but then the time is adjusted could that throw off the timing of the descriptor?
I'm not familiar with the inner workings of timerfd so I don't really know, but it is certainly possible. It's also possible that the sheer I/O is causing timing to get thrown off in the environment.
-- Joshua Colp Digium, Inc. | Senior Software Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - US Check us out at: www.digium.com & www.asterisk.org -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
