Date: Wed, 4 Dec 2013 10:14:09 -0800 From: Marc Fournier <mfournier@openstudent.ca> To: freebsd-virtualization@freebsd.org Subject: time drift w/virtualbox: FreeBSD Host -> FreeBSD guest w/ guest additions active Message-ID: <059857EF-534E-4366-BD11-924AB3ED7C31@openstudent.ca>
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[-- Attachment #1 --] Why is this such a difficult thing to keep in sync? :( I have a FreeBSD Host running 4.2.18 … Guest FreeBSD Host has Additions 4.2.18 installed .. On the Host, I believe all the kernel modules are loaded properly: # kldstat|grep vb 6 3 0xffffffff80c59000 59da0 vboxdrv.ko 8 2 0xffffffff80e20000 29f1 vboxnetflt.ko 11 1 0xffffffff80e2e000 3f8a vboxnetadp.ko On the Guest, again, I believe everything is loaded: # kldstat|grep vb 2 1 0xffffffff80c12000 26585 vboxguest.ko And the VB processes are started: # ps aux | grep VB root 606 0.0 0.1 32244 2144 ?? Ss 6:06PM 2:09.26 /usr/local/sbin/VBoxService I don’t have ntpd running on the Guest, but have tried it with it running also ... But, my time is already drifting: # ssh ruralcatholicradio.com date ; date Wed Dec 4 12:01:34 EST 2013 Wed Dec 4 17:03:17 UTC 2013 So, I login and run ntpdate to bring it back in sync: # ntpdate time.nist.gov 4 Dec 12:04:02 ntpdate[71827]: step time server 66.219.116.140 offset 102.233151 sec Note that the below is run from the FreeBSD Host that the Guest is running on … same physical machine … we are perfectly in sync: # ssh ruralcatholicradio.com date ; date Wed Dec 4 12:04:32 EST 2013 Wed Dec 4 17:04:32 UTC 2013 An hour later, we’ve now drifted by almost 2 minutes: # ssh ruralcatholicradio.com date ; date Wed Dec 4 13:07:18 EST 2013 Wed Dec 4 18:09:16 UTC 2013 Its hard to believe that anyone would be using VirtualBox if it time drifted like this regularly, so I figure it has to be something that I’m doing wrong in my configuration … Thoughts? Thx [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQEcBAEBAgAGBQJSn3DxAAoJELvzmiS5N8T7WtMH/RFwOtJUF6FnfVtSsDvsvqfB 95OGT8TQ13SlmyUmHWCoMJt2/re9khYPNAl3LUiKoM5Cl1WmShACWtZCMWpUtmIg YYOOeFCq8341j65wPR4DBL8FuHrq+mz3zYpwvKLBrLCO3zkOZoEw/tgCJQ/KOgrZ 3zdd4zoNeEmsTjmrPdbCIv/jzu+3ebYBEKD6rr8Erp/o8DhcD663v50Ih8BAMg9J qWo1/gpH8WjZMzErszxjAZe90YuTXWYOlYxy9mji71UjE+GeDmN4ydG3IkWHLVBv ITdW2OBJvrQIUb7iQd+voqnnFRPELiO1mT34oawL8FkjdK19UV4ywjNeiIizJx0= =fE9m -----END PGP SIGNATURE-----
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