[ntp:questions] GPS and the December 5/6 Solar Flare

Eugen COCA ecoca at eed.usv.ro
Sat Apr 7 14:24:02 UTC 2007

On Apr 7, 5:04 pm, "Richard B. gilbert" <rgilber... at comcast.net>

> I don't believe that more than one "prefer" keyword is useful.  ISTR
> reading here that ONLY ONE source can be "preferred".

Theoretically speaking you are right, but practically with only one
"prefer" the server loses synchronization after the GPS was powered
off. With the second prefer added in the line the server
was locked on the PPS source for several days - with no significant
drift from the right time. I made this test several times, with the
same result. Anyone on this group could repeat the experiment and
confirm what I'm saying. I'm not a software specialist, but the ntp
developers could find out if this behavior was desired or is a useful

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