clock running fast

Brooks Davis brooks at one-eyed-alien.net
Thu Dec 30 12:12:59 PST 2004


On Thu, Dec 30, 2004 at 11:37:04AM -0800, Javier Henderson wrote:
> > > /usr/sbin/ntpd -c /etc/ntp.conf -p /var/run/ntpd.pid \
> > > - -f /var/db/ntpd.drift
> > 
> > It's generally recommended that you never trust your own clock since
> > it's completely crap as time sources go.  It's also recommended that you
> > use at least 5 time sources to avoid problems with bad clocks.
> 
> But isn't that what the drift file is for, to improve the accuracy of
> the local clock during those times when the configured NTP servers aren't
> available?

Yes, but it can only do so much.  The clock crystals in your average PC
are OK as clocks, but much better as thermometers so the drift
calculations are only approximate.

-- Brooks

-- 
Any statement of the form "X is the one, true Y" is FALSE.
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