[ntp:questions] Server offset included in served time?

David Woolley david at ex.djwhome.demon.co.uk.invalid
Tue Sep 16 08:06:38 UTC 2008

Uwe Klein wrote:

> Does ntp serve "system" time or "correct" time to clients?

NTP serves system time, which its algorithms believe to be the best 
practical estimate of correct time within statistical error.  What we 
are talking about here is making that assumption more valid during 
startup transients.

Basically, as far as NTP is concerned, there is no difference between 
system time and correct time.  (Earlier versions used to serve a 
corrected time during slew recoveries, but not during normal operation. 
  That would not make a difference for the 120ms case discussed here, as 
that uses the normal control loop.)

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