Dennis Hilberg, Jr. wrote: [] > If it's any help, my Windows XP machine also performs poorly with > timekeeping. The frequency varies quite a bit and almost seems > random, and as a result the offset suffers. [] > It's possible that Windows just isn't sophisticated enough for a > precise timekeeping implementation like NTP. Although its > performance might be better in a server environment rather than a > workstation environment.
One thing you may want to check for is any "power-saving" measures in the BIOS which vary the clock speed. I don't know how well NTP copes with such things happening behind its back. You may be able to enable and disable these BIOS functions within Windows. It is important that the Multi-Media Timer flag be set so that Windows is always running in MM-timer mode, otherwise there will be steps in the timing every time that the MM timer is enabled or disabled, which happens frequently in normal use. When synced to a local GPS/FreeBSD server, these are the results my Windows systems get: http://www.david-taylor.myby.co.uk/mrtg/daily_ntp.html Cheers, David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
