Article View: comp.protocols.time.ntp
Article #918Re: Bug in xntp version 1.3 in clock selection
From: Philip Gladstone
Date: Fri, 07 Jun 1991 10:38
Date: Fri, 07 Jun 1991 10:38
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>>>>> On 6 Jun 91 18:25:23 GMT, ramus@WINDSAIL.NERSC.GOV (Joe Ramus) said:
[clockhopping (prevention of) patch removed]
Joe> How does one determine what version?
Joe> What is the version now available on louie.udel.edu ??
Joe> I wonder if the bug is fixed in the source on louie.udel.edu
The version on louie.udel.edu is still 1.3 (look in the version.c file
in the xntpd directory). Even if someone has forgotten to update the
version.c file, the bug is still present in that version!
This might also fix the problem experienced by
net@opal.cs.tu-berlin.de (Oliver Laumann) in the Sun. I found this
problem when my network became rather delayed and unpredictable. This
caused xntp to keep chaning its mind about which clocks were 'good'.
Even though my system has a radio clock on it, it would still try and
switch to synching on a remote stratum-1.
You can check to see if you have problems. If you use ntpq to
interrogate your server, then the symbols in column 1 (*.+) mean
* The current clock source
+ A possible source. These should have low offsets and/or low dispersions
. A candidate. These will be 'worse' than the '+' peers.
If these symbols 'look wrong' then you may suffer from clockhopping
and all the other bad things that flow from this.
Philip
--
Philip Gladstone Dev Lab Europe, Data General, Cambridge, UK
There did, however, remain the question of both the mysterious 60,000
Altairian dollars paid yearly into his Brantisvogan bank account, and
Zaphod Beeblebrox's highly profitable second-hand biro business.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!uunet!dg-rtp!bigben!bigben!philip From: philip@beeblebrox.dle.dg.com (Philip Gladstone) Newsgroups: comp.protocols.time.ntp Subject: Re: Bug in xntp version 1.3 in clock selection Message-ID: <PHILIP.91Jun7113804@beeblebrox.dle.dg.com> Date: 7 Jun 91 10:38:13 GMT References: <9106061825.AA01752@windsail.nersc.gov> Sender: usenet@dle.dg.com (Net News) Distribution: comp Organization: Data General, Development Lab Europe Lines: 37 X-Md4-Signature: ee80915175e7182545df82f755c64555 In-Reply-To: ramus@WINDSAIL.NERSC.GOV's message of 6 Jun 91 18:25:23 GMT