[ntp:questions] ntpd, boot time, and hot plugging

David L. Mills mills at udel.edu
Sat Feb 5 17:28:08 UTC 2005


The xntpd and early ntpd did not inrease the poll interval for 
associations other than the reference clock. It certainly does in recent 
versions, as I confirmed just now.

For record, the operative state variable is the clock discipline time 
constant, the reciprocal of which is the system poll interval. The 
system poll interval normally ramps up to 10 (1024 s) quite quickly when 
disciplined by a reference clock and all peer poll intervals normally 
follow. For most reference clocks the clock poll interval is clamped to 
6 (64 s) for the lowest wander. The system poll interval is on the rv 
billboard, while the peer poll interval for each association is on the 
rv <id> billboard.


Kenneth Porter wrote:

> Ok, looking at this via Google Groups I can see where it happened. Alain 
> sent a private response to me and then reposted it as a new message to the 
> group.
> <http://groups-beta.google.com/group/comp.protocols.time.ntp/browse_frm/
> thread/3fe7b82582c90b41/>

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