"unruh" <[email protected]> wrote in message
news:[email protected]...
[]
See the last two graphs on www.theory.physics.ubc.ca/chrony/chrony.html
which are the response of ntp to a rate change from about215PPM to
168PPM The "halving time" for the offset is about .04 days, which is
about 1 hr. Thus it depends on how far off you clock is. Also this graph
is for the poll interval of 16 sec. ( a gps receiver) For longer poll
intervals the time will be proportionately longer.
Bill,
The bottom of that page mentions ntp versions 4.2.0 and 4.2.4, which are
not current.
In practice, even on a portable PC running Windows over Wi-Fi ntp is
usually synced to within a few milliseconds as soon as the system is
booted. Look at the daily boots of PC Puffin:
http://www.satsignal.eu/mrtg/puffin_ntp-b.html
Cheers,
David
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