Hi all, Is anyone running FreeSWITCH virtualized (xen or vmware) in production? I saw ec2 and xen mentioned a few places. If so, are there tips or tricks for handle timer issues which affect virtual machines in general, such as recommended divider or clocksource settings? I'm seeing funny timing issues while testing with audio recording and playback that speed up or slow down. I have tried both paravirt and hvm. The default xen kernel has a timer of 250, so I tried to hvm instead using the stock 5.3 kernel with the 1khz timer but didn't see much improvement. All of this was tested on 64-bit CentOS 5.3. - Physical host: Linux localhost.localdomain 2.6.18-164.11.1.el5xen #1 SMP Wed Jan 20 08:06:04 EST 2010 x86_64 x86_64 x86_64 GNU/Linux CONFIG_HZ=250 - Paravirt host: Linux localhost.localdomain 2.6.18-128.el5xen #1 SMP Wed Jan 21 11:12:42 EST 2009 x86_64 x86_64 x86_64 GNU/Linux CONFIG_HZ=250 - Hvm host: Linux localhost.localdomain 2.6.18-128.el5 #1 SMP Wed Jan 21 10:41:14 EST 2009 x86_64 x86_64 x86_64 GNU/Linux CONFIG_HZ=1000 I'm sure physical hosts are the de-facto best practice, but are virtual machines not worth it at all? Cheers, Rob