[ntp:questions] Garmin LVC 18x jitter problem

Michael Haardt michael at moria.de
Sat Aug 17 18:20:23 UTC 2019

Miroslav Lichvar <mlichvar at redhat.com> writes:
> I think you do. To prevent the source from being rejected as a
> falseticker it needs to have a larger root distance. That could be from
> a larger dispersion or delay. You modified the refclock jitter, which
> ends up in the peer dispersion (after some weighting). Another approach
> would be to specify a minimum for the peer dispersion directly. There
> could be also an option to specify a minimum delay. But adjusting it in
> the refclock specific code, as you did, makes perfect sense to me.

Which of the alternatives do you prefer? I got one way working, but I
am willing to test any other in case you have a patch or could at least
tell me where to enforce the minimum in the code to create a patch.

In the end, it would be great to get the needed functionality into ntpd.


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