[ntp:questions] Clock Offset
david at ex.djwhome.demon.invalid
Wed Dec 19 21:59:25 UTC 2012
Mischanko, Edward T wrote:
> How can my local clock have a negative offset when none of the
*** selected peers have a negative offset? Is it possible?
It is not clear what you mean by "local clock" and "offset", here. For
the normal NTP meanings of these, the offset of the local clock is zero
Could you provide the ntpq, or other, output on which you are making
this observation, and indicate which fields you are using.
In the normal ntpd sense, the offset of the local clock is always zero
and the offsets of other sources should be randomly scattered around
zero, if the time is properly synchronised (the distribution may not be
symmetric, but can never be one sided, once the clock is locked.
Offset is measured relative to the estimated time measurement from the
upstream server. It is not relative any absolute standard of time,
except after adding all the intermediate errors.
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