From owner-freebsd-current  Tue Mar 11 16:38:57 2003
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Date: Tue, 11 Mar 2003 16:38:54 -0800
From: James Satterfield <james@uberduper.com>
To: "Andrew P. Lentvorski, Jr." <bsder@allcaps.org>
Cc: current@freebsd.org
Subject: Re: Time drift.
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I guess I've just never paid that much attention to the clock. I think it's time for me to get a real clock and setup an NTP server.
Thanks.
James.

On Tue, 11 Mar 2003 16:24:57 -0800 (PST)
"Andrew P. Lentvorski, Jr." <bsder@allcaps.org> wrote:

> On Tue, 11 Mar 2003, James Satterfield wrote:
> 
> > I'm getting what I think is substantial time drift on my -current boxes.
> > My home firewall in particular drifts about .42 seconds every hour. My
> > desktop machine drifted ~350 seconds over the last 5 days.
> 
> .42 s/ 1   hr is about 116 ppm stability
> 350 s/ 5 days is about 810 ppm stability
> 
> 116 ppm stability is certainly within the specification of most quartz
> crystals and PC southbridges.  810 ppm stability is a little sloppier than
> I would expect, but certainly not outside the realm of possibility.  It
> could be a bug, but I wouldn't bet on it.  The standard answer of "run
> NTP" applies.
> 
> An $8.00 wristwatch has much better time accuracy that your multi-$100 PC.
> 
> -a
> 
> 
> 

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