While several people suggested that Jeff use guest/host synchronization, no one 
ever answered the first question, "is it possible to override the maximum 
offset PPM?"

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of 
[email protected]
Sent: Wednesday, 28 January 2009 14:46
To: [email protected]
Subject: [ntp:questions] Increase maximum frequency offset to deal with really 
bad clock

Hi folks,

I have a some FreeBSD systems running as guests in Microsoft Virtual
Server.  There is a known problem with these were the clocks run very
fast.  I am trying to use ntpd to keep their clocks in sync, but the
frequency error offset is exceeding (I think) ntpd's maximum of 500,
my driftfile always contains a value of "-500.000".  If understand the
way this works correctly, if I could get the frequency error offset to
represent the real error rate which I believe to be much higher that
500 PPM, then ntpd would be able to keep the clocks in sync, as it is
now, it slowly falls behind until it fails to correct altogether.

So is it possible to override the maximum offset PPM in the driftfile,
or is there a better way to fix this?

Thanks,
Jeff

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