[ntp:questions] Why is NTPD adjusting the system clock when in LOCAL(0) mode?

Dave Hart hart at ntp.org
Fri Jun 17 05:21:18 UTC 2011

On Wed, Jun 15, 2011 at 15:21 UTC, Charles Elliott
<elliott.ch at verizon.net> wrote:
> server iburst minpoll 4 maxpoll 4
> fudge stratum 12
> Yet NTPD is constantly changing the curTimeAdjustment.  Here is the evidence
> from my program:

ntpd "freewheels" as orphan parent or using the LOCAL driver at the
last-known frequency adjustment persisted in the driftfile, which
given your configuration must have a default path even if one is not
given.  Assuming your system was synchronized to a NTP source at some
time in the past, that frequency correction likely brings your PC's
clock much closer to beating at 1 second per second.

ntpd logs the initial "drift" value, if found, at startup.

Dave Hart

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