[ntp:questions] flipping between stratum 1 clocks regularily
jason at extremeoverclocking.com
Tue Feb 19 17:33:53 UTC 2008
You can try using the "prefer" flag (read the docs) to have it stick to one
of the servers.
> I've recently been provided with 4 "highly accurate" ntp servers that
> are using GPS as their primary synchronization source. Well, 2 of the
> hosts are using GPS (stratum 1) and the other two are syncing to those
> (stratum 2). I've been going around configuring all 4 hosts in my
> ntp.conf and am starting to notice that my machines are flipping back
> and forth between the two stratum 1s. I don't think this is
> Some of the documentation from the clock vendors suggests that their
> clocks are "so accurate" that ntp has a hard time determining which is
> more so and this affect can occur. I was thinking of dropping one of
> the ST1 clocks from the config and going with 1 ST1 and 2 ST2s....
> that seems more stable in a test. I wanted to see if anyone else has
> dealt with something similar and how you fixed it.
More information about the questions