[ntp:questions] NTPD silently not tracking

unruh unruh at invalid.ca
Sun Sep 1 20:42:23 UTC 2013

On 2013-09-01, Steve Kostecke <kostecke at ntp.org> wrote:
> On 2013-09-01, Rob <nomail at example.com> wrote:
> The NTP Reference Implementation is free software. The copyright
> holder (The University of Delaware) makes no representations
> about the suitability this software for any purpose. It is
> provided "as is" without express or implied warranty. Please visit
> http://www.ntp.org/copyright for the complete copyright notice and
> license statement.

Yes, usual legal ass protection. Fortunately ntpd developers usually do not
actually either believe that nor act as though they believe that. 
They tend not to say "Oh-- it does not work, tough shit."
And you do them, and yourself a disservice by saying that that is what
they do. It is not what they or you do. 

In this case ntpd wandered off by hours with no complaint. That is not a
proper behaviour of a professional piece of software. Now it could be
that they have the local clock enables, and for some reason ntpd chased
that rather than all of the other server sources. Pointing out that they
should never actually use the local clock as a source is certainly
useful since the clock is never wrong with respect to the local source.
But if the computer has 5 outside source available and still chases
after the local source that is a bug that should be fixed. If you know
some attempt was made to fix a bug like than in a more recent version
than the one used by the user, then advising upgrade is appropriate (as
is telling him never to use local)


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