[ntp:questions] Stabilizing the drift file?

Maarten Wiltink maarten at kittensandcats.net
Wed Nov 22 10:51:51 UTC 2006

"Robert Wachinger" <job at Robert-Wachinger.de> wrote in message
news:ek175f$sp9$1 at daniel-new.mch.sbs.de...
> We have here the requirement to have a replaced board (a fresh one
> from the factory, where a correct content of the drift file is
> unknown) up after 5 minutes in a cluster, which also means, that
> its time does not stray more than 10ms (within the cluster).
> Any tips?
> We tried here to "play" with minpoll, burst, initial drift files
> (value 0).

Iburst would start you with a low offset. But that has really
absolutely nothing to do with intrinsic frequency error.

Can you run (NTP on) the board outside the cluster? Your problem is
that you don't know the correct drift value. It seems simple then:
you should find out.

I'm not sure if limiting maxpoll is guaranteed to keep your offset
low the way running ntpdate often would; frankly I doubt it.

Doesn't the cluster allow you to add nodes in standby mode?

Maarten Wiltink

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