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From: Mills@udel.edu
Newsgroups: comp.protocols.time.ntp
Subject: Re:  XNTPD problems on SPARC w/ SunOS 4.1.1
Message-ID: <9106101426.aa07183@huey.udel.edu>
Date: 10 Jun 91 18:26:56 GMT
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Roy,

Forget the submilliseconds. The extreme problem comes from writing
out file-system updates, which occurs every 30 seconds and can cause
glitches up to several hundred milliseconds with busy file servers.
There are other problems, too, involving glitches of lesser amounts,
but greater than a few tens of milliseconds. The real downer is
when the clock gets yanked over the 128-ms linear-tracking interval,
which causes the algorithms to perform a complete reset. Should you
not care about such things, you might consider upping that interval.
 
Dave