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Date:      Sat, 26 Apr 2003 10:15:37 -0500
From:      Kirk Strauser <kirk@strauser.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: Time Problem in 5.0
Message-ID:  <87of2t8f3a.fsf@pooh.honeypot.net>
In-Reply-To: <20030426024616.GF5143@dan.emsphone.com> (Dan Nelson's message of "Fri, 25 Apr 2003 21:46:16 -0500")
References:  <20030424214413.GC90097@grimoire.chen.org.nz> <20030425091950.GA558@dhumketu.homeunix.net> <3EA92FF1.30809@potentialtech.com> <20030425184813.GA674@dhumketu.homeunix.net> <448ytye5xj.fsf@be-well.ilk.org> <3EA9925E.30201@potentialtech.com> <20030425203301.GU45035@dan.emsphone.com> <3EA9D2EC.3040304@potentialtech.com> <20030426010835.GB5143@dan.emsphone.com> <3EA9EDF4.9000702@potentialtech.com> <20030426024616.GF5143@dan.emsphone.com>

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At 2003-04-26T02:46:16Z, Dan Nelson <dnelson@allantgroup.com> writes:

> But ntpdate does serve a useful purpose during bootup.

Dan, something I've always wondered about: if a machine runs ntpd during
normal operation and is rebooted mainly for periodic maintenance, wouldn't
it's hardware clock be accurate to within a few fractions of a second during
the downtime?  I mean, if my clock it NTP-correct at noon, and I reboot the
machine to do a `make installworld', it will be pretty close to accurate
when I bring it back online.  Since ntpd launches instantly when not in `-q'
mode, what's the advantage or point of running ntpdate on boot?  Why not
just start ntpd as normal and let it smooth over the small amount of drift?
-- 
Kirk Strauser



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