> Or you can ask the it guys to use a windows server... Eg:
>
> http://support.microsoft.com/kb/816042
That is a joke Jared? You left off the smiley.
Windows doesn't do NTP out-of-the-box (Microsoft assertions to the contrary
notwithstanding). You can build a reasonably working standard daemon, however
don't expect time to be very accurate. Windows out-of-the-box can keep time
+/- 10 minutes or so using the Microsoft lets-pretend-NTP.
You can build the current standard NTPD distribution on Windows. You can also
spend lots of time to make it "work as well as possible" (once you manage to
get it to compile, that is). Even so, when you have configured it to the
optimality of accuracy, this is what you can expect:
remote refid st t when poll reach delay offset jitter
==============================================================================
+tic.nrc.ca .PPS. 1 u 13 64 377 55.544 5.913 0.870
-tac.nrc.ca .ATOM. 1 u 48 64 377 56.188 4.768 3.041
-toc.nrc.ca .ATOM. 1 u 1 64 377 55.485 4.758 0.981
+tick.usask.ca .GPS. 1 u 34 64 377 19.566 6.942 5.699
*tock.usask.ca .GPS. 1 u 29 64 377 19.665 5.955 1.937
-clock.isc.org .GPS. 1 u 37 64 377 53.091 8.311 0.649
+clock.sjc.he.ne .CDMA. 1 u 48 64 377 43.591 6.066 2.501
offset: 0.005955 s
frequency: 23.346 ppm
poll adjust: -30
watchdog timer: 47 s
is about the best you will get. Statistics are pretty awful:
Date # O.Avg O.Median O.Range O.CI O.Skew O.Kurt
F.Avg F.Median F.Range F.CI F.Kurt
2012-01 899 0.765559 0.004198 20.05221 0.000371 -0.56023 0.751151
21.31698 20.9705 2.9685 0.108050 -0.88068
2012-02 9673 0.237434 -7.46502 59.75607 0.000156 -1.43583 8.609085
19.01126 19.3495 5.2995 0.040683 -0.54578
2012-03 1380 -0.02157 -14.8416 44.00043 0.000124 -1.08589 4.559049
18.08941 16.822 7.536 0.045387 0.268831
2012-04 1322 0.196654 21.16261 106.1250 0.000141 -0.48643 26.05868
17.56811 16.812 6.111 0.040561 -0.38021
2012-05 8849 0.118125 27.44213 72.01526 0.000161 0.296114 8.939429
17.88685 15.2595 9.3195 0.080186 1.121740
2012-06 1457 0.409662 -20.2809 63.32684 0.000114 -1.44144 11.98237
20.50724 19.5425 6.7425 0.042372 -0.08891
6102 0.201651 21.16261 106.1250 6.065429 -0.84354 13.78161
18.71838 16.1125 10.1725 0.023443 1.215941
This is from a custom ntpd build using the highest precision that it can manage
to coerce from Windoze.
Of course, this may be accurate enough for most uses -- at least it does not
have to time-step.
Doesn't compare to ntpd on linux on an 80286 with 640K ram booting from a
floppy, which can maintain time sync within less than 1 ms easily.
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