Garrett,
Note the NIST servers are themselves wrangled by ACTS once per hour. The
behavior is somewhat bumpy, as the machines do wiggle considerably over
the hour. My data here with the Seattle server show wiggles in the order
of 3 ms.
Dave
Garrett Wollman wrote:
In article <[EMAIL PROTECTED]>,
rtxo <[EMAIL PROTECTED]> wrote:
Oddly, one of the acts hosts is consistently 3-5 milliseconds behind,
and the other 3-5 milliseconds ahead:
[...]
I wonder whats going on with these hosts. The refclock_acts driver code has
a comment that claims the acts adjusts for the round trip delay.
Not sure how relevant it is, but have a look at
<http://khavrinen.csail.mit.edu/ca-ntp-offsets.pdf>. (It's more
interesting on slower machines.) That's offset on the Y axis and MJD
on the X axis. Note the odd behavior of time-b.nist.gov (another ACTS
server).
-GAWollman
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