Kernel NTP flipping between FLL and PLL modes
David Magda
dmagda at ee.ryerson.ca
Fri Apr 1 05:04:40 PST 2005
On Apr 1, 2005, at 05:45, Peter Jeremy wrote:
> Any suggestions as to why this is happening? (And how I can stop
> it regularly flipping)
I don't think this is really an issue. It may be annoying to see it in
the logs, but NTPv4 uses each algorithm when it's appropriate to get
the most accurate time. Since network conditions change, the way NTP
has to deal with them changes since it queries other NTP servers over
the network.
This was actually freebsd-questions last year and one response pointed
to this paper:
http://www.eecis.udel.edu/~mills/database/papers/allan.pdf
You may want to check-out the the netgroup comp.protocols.time.ntp if
you want to ask the experts (and authors) on NTP.
More information about the freebsd-stable
mailing list