On 10/20/2010 12:44 PM, Alexander Petrov (Moscow, Russia) wrote:
On 20 окт, 16:54, Joseph Gwinn<[email protected]> wrote:
I have a small network of Windows XP (64 bit) running simulations, with
NTPv4 running on all the boxes and using a GPS-based timeserver on the
company network. The ping time to the server is 2 milliseconds from my
desk, but I'm seeing random time errors of order plus/minus 5 to 10
milliseconds, based on loopstats data.
By default, the timer resolution 15.625 ms (1/64 second), and simple
synchronization program does not take this into account in
implementing the NTP requests. The problem is easily solved - improved
software, or increase the timer resolution.
Also note that Windows' clock "ticks" every 17 milliseconds.
Measure with micrometer, mark with chalk, cut with axe!
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