<p>I run freeswitch on both bare metal and OpenVZ containers. Other than occasional choppy audio I don't have issues on virtualized nodes. I suggest making sure your host is in fact set up properly. I've actually had better results using freeswitch than asterisk on the same host. There are white a few people out there running FreeSWITCH on virtualized nodes with favorable results. </p>
<p>-BDF</p>
<p>P.S. As with Asterisk it's not really recommended to run FreeSWITCH in a OpenVZ container. Works well enough if you bypass media.</p>
<div class="gmail_quote">On Feb 20, 2012 2:34 PM, "Tim Nelson" <<a href="mailto:tnelson@rockbochs.com">tnelson@rockbochs.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Greetings all-<br>
<br>
I'm quite experienced with Asterisk, and specifically, usage in a virtualized environment. It works great with a bit of tuning. I'm starting to work more with Freeswitch, and as such, I'm looking to implement it in a virtualized environment. My initial installation was onto a CentOS 6 OpenVZ container. However, the logs are showing this (many times):<br>
<br>
2012-02-20 18:43:51.846882 [WARNING] switch_scheduler.c:114 Task was executed late by 280 seconds 1 heartbeat (core)<br>
2012-02-20 18:43:51.846882 [WARNING] switch_scheduler.c:114 Task was executed late by 260 seconds 2 check_ip (core)<br>
2012-02-20 18:46:21.496538 [CRIT] switch_time.c:798 Virtual Migration Detected! Syncing Clock<br>
2012-02-20 18:46:21.496538 [CRIT] switch_time.c:810 If you see this message many times try setting the param enable-clock-nanosleep to true in switch.conf.xml or consider a nicer machine to run me on. I AM *FREE* afterall.<br>
<br>
I completely understand the issue with realtime applications such as VoIP in a virtualized environment with limited timing facilities. However, OpenVZ makes use of a shared kernel which in my prior experience, does not have the issues associated with fully virtualized technologies like VMWare, KVM, Xen, Hyper-V, etc. Am I incorrect or is this issue specific to Freeswitch (but apparently not so in use with Asterisk) ?<br>
<br>
There are a couple of wiki entries [1][2] which seem to indicate others are using Freeswitch with OpenVZ with success. Am I mistaken?<br>
<br>
Looking for some pointers if you can lend some insight into this issue. Maybe the errors are harmless? I have not actually pushed any traffic through this installation yet, due to the errors.<br>
<br>
Thanks!<br>
<br>
--Tim<br>
<br>
[1] <a href="http://wiki.freeswitch.org/wiki/FreeSWITCH_in_OpenVZ" target="_blank">http://wiki.freeswitch.org/wiki/FreeSWITCH_in_OpenVZ</a><br>
[2] <a href="http://wiki.freeswitch.org/index.php?title=Virtualization&redirect=no" target="_blank">http://wiki.freeswitch.org/index.php?title=Virtualization&redirect=no</a><br>
<br>
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</blockquote></div>