[ntp:questions] Re: Effects of mindist setting

David L. Mills mills at udel.edu
Sun Sep 24 16:06:12 UTC 2006


See the architecture briefing at the NTP project page and especially the 
slide on the selection/intersection algorithm. The mindist value is 
added to the correctness interval in order to widen it and allow for 
increased jitter.


Kevin Oberman wrote:
> I have a bunch Endrun Technologies CDMA clock attached to small servers
> using PPS. To prevent the jitter on the serial port from causing the
> clock to be marked as falsetick and disabling the PPS, I have added "tos
> mindist" to my configuration.
> I am unclear on the actual effect of this configuration and that makes
> me a bit unsure of how I should set the value. 0.010 was one
> recommendation and 0.015 was another.
> Any place I can look for an explanation of this? I don't see in in the
> documentation. 
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