What should the poll be for the shared memory driver (type 28)? This
Web page:
http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver28.html
suggests that the driver internally has a poll interval of 1 second,
another document I've seen suggests setting:
server 127.127.28.1 minpoll 1 prefer
and yet in the ntpq -p billboard the poll is shown as 8 seconds.
Loopstats are reported at 8 second intervals, and the poll interval is
shown as 3 (i.e. 8 seconds).
I'm confused! What should be the correct setting in the ntp.conf file?
BTW: this comes about from Folkert van Heusden who is using a user-mode
program to make NTP on a Raspberry Pi more precise, i.e. providing PPS
support without having to modify the kernel. See:
http://www.febo.com/pipermail/time-nuts/2013-June/077484.html
--
Thanks,
David
Web: http://www.satsignal.eu
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