[ntp:questions] peers with high offset on Intel Quad Core running Windows 2003

Jimmy ntp jimmy.ntp at gmail.com
Fri Aug 15 13:53:48 UTC 2008


Hi,
  I'm consistently seeing offsets between +- 6 ms on my Windows servers.
For the same hardware running Linux, NTP behaves great (+- 500 us offset)
but on Windows it is bad.  Also the same version of Windows on AMD procs is
behaves great.

Hardware:
HP ProLiant DL360 G5
* 2 Quad-Core Intel(R) Xeon(R) Processor E5450
* 8 GB of memory

Software:
* Windows 2003
* ntp-4.2.0a

 Here is ntp.conf:
========================
server 192.168.10.5 burst iburst minpoll 4 maxpoll 6
server 192.168.10.6 burst iburst minpoll 4 maxpoll 6
server 10.10.10.10 burst iburst minpoll 4 maxpoll 6
server 10.10.10.11 burst iburst minpoll 4 maxpoll 6
server 10.10.10.12 burst iburst minpoll 4 maxpoll 6
server 10.10.10.13 burst iburst minpoll 4 maxpoll 6
server 10.10.10.14 burst iburst minpoll 4 maxpoll 6
server 10.10.10.15 burst iburst minpoll 4 maxpoll 6
========================

% ntpq -np
     remote           refid      st t when poll reach   delay   offset
jitter
==============================================================================
*192.168.10.5   .GPS.            1 u   44   64  377    0.905   -4.274
0.656
+192.168.10.6   .CDMA.           1 u    1   64  377   18.731   -6.324
1.915
+10.10.10.10    192.168.10.5     2 u   29   64  377    0.399   -5.357
0.535
-10.10.10.11    192.168.10.5     2 u    4   64  377    0.352   -6.036
0.175
-10.10.10.12    192.168.10.5     2 u   34   64  377    0.397   -5.200
0.642
-10.10.10.13    192.168.10.5     2 u    1   64  377    0.498   -5.910
1.410
-10.10.10.14    192.168.10.5     2 u    2   64  377    0.376   -6.069
1.450
-10.10.10.15    192.168.10.5     2 u    1   64  377    0.335   -5.132
1.465


Have any one seen this issue?  Any advice?  Thanks in advance.



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