[ntp:questions] Packet timestamps when using Windows-7/Vista
David J Taylor
david-taylor at blueyonder.delete-this-bit.and-this-part.co.uk.invalid
Tue Dec 15 14:36:25 UTC 2009
> I've added a test to my program to see whether the value from
> GetSystemTimeAsFileTime ever steps backwards, and it hasn't done so in
> my testing so far. So I remain unsure why, on a system without the
> interpolation code, I'm seeing the TX time before the RX time.
> Certainly would be nice to have someone confirm the result - a default
> installation on a Vista or Windows-7 should show this.
There is a brief write-up of the program, and sample plots from "good" and
"bad" NTP servers, here:
Martin has been able to confirm the timestamp sequence issue using
different test software running on a different OS.
More information about the questions