[ntp:questions] What level of timesynch error is typical on Win XP?

Richard B. Gilbert rgilbert88 at comcast.net
Wed Oct 20 20:07:02 UTC 2010

On 10/20/2010 12:44 PM, Alexander Petrov (Moscow, Russia) wrote:
> On 20 окт, 16:54, Joseph Gwinn<joegw... at comcast.net>  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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