From owner-freebsd-hackers Wed Dec 24 06:26:30 1997 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.7/8.8.7) id GAA10554 for hackers-outgoing; Wed, 24 Dec 1997 06:26:30 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from phoenix.its.rpi.edu (dec@phoenix.its.rpi.edu [128.113.161.45]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id GAA10546 for ; Wed, 24 Dec 1997 06:26:23 -0800 (PST) (envelope-from dec@phoenix.its.rpi.edu) Received: from localhost (dec@localhost) by phoenix.its.rpi.edu (8.8.8/8.8.7) with SMTP id JAA03979; Wed, 24 Dec 1997 09:25:56 -0500 (EST) (envelope-from dec@phoenix.its.rpi.edu) Date: Wed, 24 Dec 1997 09:25:56 -0500 (EST) From: "David E. Cross" To: Jamie Bowden cc: dk+@ua.net, Warner Losh , freebsd-hackers@FreeBSD.ORG Subject: Re: procedure to adjust clock drift? In-Reply-To: <199712241354.IAA04331@gatekeeper.itribe.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk On Wed, 24 Dec 1997, Jamie Bowden wrote: > On Tue, 23 Dec 1997, Dmitry Kohmanyuk wrote: > > > In article <199712232054.NAA24318@harmony.village.org> you wrote: > > > In message <199712231738.JAA01502@rah.star-gate.com> Amancio Hasty writes: > > > : Does anyone have a procedure to adjust the clock drift in a PC? > > > > > ntp? > > > > > It is already in the tree as xntpd and friends... > > > > of course; the problem with PCs is that they, unlike, say, sparcs, > > can gain few seconds in a day... > > > > I have an SGI Challenge S that just started losing about 40 minutes a day > about a week ago. It's not just a PC problem, though PC clocks tend suck > in general. My SGI's are highly reliable with that one exception, and > that one worries me, but hey, that's what backups are for. Heh... we used to routinely have entire labs of SGIs go off by DAYS in the period of a weekend, they were all trying to sync off each other, and just kept drifting further and further away. What is curious for me though is before I enabled xntpd (and I recomend that everyone should use this program to keep in sync), I would drift by a minute a week (rather FreeBSD would, my CMOS clock would still be right on)... I understand why this happens, it is just a bit strange (IMO that FreeBSD would not repoll the CMOS clock occassionaly) -- David Cross ACS Consultant