[ntp:questions] Bug 1700 - Clock drifts excessively at polling levels above 256.

unruh unruh at wormhole.physics.ubc.ca
Sat Apr 23 18:19:55 UTC 2011


On 2011-04-22, Mischanko, Edward T <Edward.Mischanko at arcelormittal.com> wrote:
> 256.
>
> My system clock drifts excessively when polling above 256 in a Windows
> environment, as much as 5 ms or more.  I have made changes to
> .../ntpd/ntp_loopfilter.c CLOCK_PLL, CLOCK_FLL, CLOCK_LIMIT, and
> CLOCK_PGATE to address this problem.  I realize the changes I have made
> are global in nature and really only need changes in the Windows port.
> I would welcome a patch to the Windows port to accomplish these changes
> or any other changes that accomplish the 1 ms stability I have now
> achieved.  I hope Dr. Mills will have constructive comments on this
> problem and proposed solutions.

Does your system cpu use powersaving cpu frequency changes? Is it a
virtual Windows machine?

> */




More information about the questions mailing list