http://www.freebsd.org/~phk/x.nanokernel.gz
contains patches relative to -current to implement the new "nanokernel"
PLL from Dave Mills.
This only works with a ntpd v4, suggest 4.92c or better from:
ftp://ftp.eecis.udel.edu/pub/ntp
It does still not support the hardpps()/PPS_SYNC support, that will
come later.
Make sure to configure/make your ntpd-4 from scratch to gain
advantage of the new resolution, simple recompilation may not be
enough. (You also need to get timex.h from /sys/sys to /usr/include/sys.
Make world recommended).
You should now be truly limited to hardware performance (xtal tempco
and interrupt jitter).
Please send comments and observations, both positive AND negative.
I am very interested in seing some peerstats files for refclocks
running this code.
Poul-Henning
PS: See also http://www.freebsd.org/~phk/timechan.gif
--
Poul-Henning Kamp FreeBSD coreteam member
[email protected] "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!
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