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From: trp@CHERRY.CRAY.COM (Todd Pisek)
Newsgroups: comp.protocols.time.ntp
Subject: NTP convergence rates
Message-ID: <9103061842.AA06818@cherry07.cray.com>
Date: 6 Mar 91 18:42:13 GMT
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I am fairly new to this ntp stuff. We have a need to maintain time to a
1 ms accuracy and to converge to this accuracy within minutes of startup.
I have browsed the NTP version 3 specification, especially the local clock
sections. I realize there is a qualatative relationship between the convergence
rate and the latency involved in obtaining the local time. I also suspect there
is a relationship between the consistancy of the latency and accuracy. What
I would like to know is if anyone has hard numbers relating the statistical
properties of the local clock access path to convergence rate and accuracy.

	Todd