Re: time synch between two systems: HOWTO?

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Andrew Robinson wrote:
Out of curiosity, would it work to "master" every system to its internal clock and "peer" it to every other system on the network?

If you made the internal clocks stratum 1, then peered them, it would
be the wrong thing to do.  Each machine would think *it* knew what
time it was, offering it to others.  Like a roomfull of prima-donas.
They wouldn't come to consensus.

I've had the best success with a simple chain, having two or more
machines slave to an external server, then all the other machines
consider these couple of machines servers.  That way I minize the load
on primary servers.  You can use ntptrace to see your timing chain:

% ntptrace
localhost.localdomain: stratum 4, offset 0.000008, synch distance 0.32141
ahab.rinconres.com: stratum 3, offset 0.062624, synch distance 0.26173
seismo.cmr.gov: stratum 2, offset 0.124024, synch distance 0.12637
ntp2.usno.navy.mil: stratum 1, offset 0.112434, synch distance 0.00072, refid 'USNO'

I've never really understood the benefit of "peer" for most applications.

-Bob Arendt


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