anyone running GPS clocks in Southeastern Georgia?
Robert E. Seastrom
rs at seastrom.com
Fri Jan 21 16:37:46 CST 2011
Gary Buhrmaster <gary.buhrmaster at gmail.com> writes:
>> NTP isn't going to be the only "ripple".
> Most of the "brand name" GPS NTP solutions have a clock
> with is more than stable enough to survive without GPS
> lock for 45 minutes(*). Some of the more expensive units with
> temperature controlled oscillators have hold times in the
> many weeks. My guess is that the NTP ripples will be
> limited to those NTP servers just (or recently) booted
> which have not yet achieved a stable clock state.
> (*) This presumes that this test results in loss of signal
> lock, and not intentionally injected false information.
Seeing the ripples also presumes that people are monitoring their NTP
system health more closely than just looking at the output of ntpq -p. :)
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