Physical non virtualized server: switch_time.c:967 Virtual Migration Detected! Syncing Clock
Hello, I am running FS on a physical server (16 core Xeon) and got the above error. The server runs entOS 5.9, and one of the latest FS gits. When I had this message FS was freezing for a while, and active calls lost the voice (I think, can't correlate exactly). 1.What does this message means on a non-virtualized server? 2. Can it explain the freeze? 3. What can I do to overcome it? Thanks! __Yehavi:
The message is probably shown due to the fact that FS froze, not the other way around. Did you do something special when this happened? No gdb debugging going on or something like that? I can't find any reason why this would happen, except that the server was over loaded, or something else in the kernel happened. Every channel has it's own thread. So if something would freeze it wouldn's show up like this, maybe in a single call or something. So the only thing I can see right now in an over loaded server - even though it sounds strange, since you have 16 cores... 2013/7/16 Yehavi Bourvine <yehavi.bourvine@gmail.com>
Hello,
I am running FS on a physical server (16 core Xeon) and got the above error. The server runs entOS 5.9, and one of the latest FS gits. When I had this message FS was freezing for a while, and active calls lost the voice (I think, can't correlate exactly).
1.What does this message means on a non-virtualized server? 2. Can it explain the freeze? 3. What can I do to overcome it?
Thanks! __Yehavi:
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The server is almost idle... I have a problem in which FS-1.2 & GIT are freezing sometimes and calls get queued in RINGING state, while this does not happen with 1.0.x; I thought I've found the reason for this, but it seems I didn't... I'll analyze the logs and open a JIRA. Thanks, __Yehavi: 2013/7/16 Peter Olsson <peter@olssononline.se>
The message is probably shown due to the fact that FS froze, not the other way around.
Did you do something special when this happened? No gdb debugging going on or something like that? I can't find any reason why this would happen, except that the server was over loaded, or something else in the kernel happened. Every channel has it's own thread. So if something would freeze it wouldn's show up like this, maybe in a single call or something. So the only thing I can see right now in an over loaded server - even though it sounds strange, since you have 16 cores...
2013/7/16 Yehavi Bourvine <yehavi.bourvine@gmail.com>
Hello,
I am running FS on a physical server (16 core Xeon) and got the above error. The server runs entOS 5.9, and one of the latest FS gits. When I had this message FS was freezing for a while, and active calls lost the voice (I think, can't correlate exactly).
1.What does this message means on a non-virtualized server? 2. Can it explain the freeze? 3. What can I do to overcome it?
Thanks! __Yehavi:
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
Check dmesg for any errors. In particular look for disk I/O errors and use smartctl (smartmontools) to check for bad disk sectors. I've seen servers freeze entirely for a minute or more when trying to access a bad sector. That could lead to a big jump in the clock time for anything that was blocking on the disk I/O. Also check for any swapping to disk happening. -Steve On 16 July 2013 10:46, Yehavi Bourvine <yehavi.bourvine@gmail.com> wrote:
Hello,
I am running FS on a physical server (16 core Xeon) and got the above error. The server runs entOS 5.9, and one of the latest FS gits. When I had this message FS was freezing for a while, and active calls lost the voice (I think, can't correlate exactly).
1.What does this message means on a non-virtualized server? 2. Can it explain the freeze? 3. What can I do to overcome it?
Thanks! __Yehavi:
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
participants (3)
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Peter Olsson
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Steven Ayre
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Yehavi Bourvine