David,
I have no idea where you are coming from. At my feet are two GPS/CDMA
time servers running embedded Linux systems. I have two more on campus
plus two dedicated Unix machines connected to GPS receivers. NIST has
about a dozen dedicated time servers running FreeBSD. USNO has about a
dozen running HP-UX. The NRC in Canada runs at least two of them, as
does an unknown number in Europe, Japan and Australia. There is even one
in Antarctica and occasionally one or two in space and oone on the
seafloor of the Pacific Ocean. Maybe they are abnormal in your view, but
they are the ones I am concerned about and they are the ones the Allan
deviation analysis is intended for. If you want to run NTP in a virtual
machines, the performance will depend on many factors, but none of which
have to do with Allan deviation.
Dave
David Woolley wrote:
David L. Mills wrote:
I beg to differ. All the machines I used are PCs or similar
workstations. They really and truly behave according to an exponential
As you note in another reply, you seem to use them in a way that is
abnormal for most users of NTP, i.e. as dedicated real machines in
well controlled environments.
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