[ntp:questions] Clock Offset

Terje Mathisen "terje.mathisen at tmsw.no" at ntp.org
Thu Dec 20 08:42:24 UTC 2012


Mischanko, Edward T wrote:
> No local clock is in use!!  I was really questioning how the
> averaging algorithm could come up with a negative offset when none of
> the individual offsets were negative?

That's (sort of) easy!

The local clock offset is the best estimate of the (exponentially afair) 
averaging algorithm from the individual iterations of the control loop, 
while the ntpq -p gives you the last measurement from each server/clock 
source.

I.e. they measure different things.

Terje
-- 
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"



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