Bug#426414: extra info
I have done a few more tests, to reject some hypothesis...
first idea was a bug in ntp, but I disabled it totally and I now run
ntpdate in a cronjob.
I have the same time jumps.
I noticed the usb resets in coincidence with the time jumps and I
removed all usb devices (except keyboard and mouse) but I keep the same
problems.
then I thought it could be some miscommunication with the time servers?
disconnecting physically the box from the net caused, after a few hours,
a difference of some 15 minutes with the correct time.
-----------------
jumps are almost only forwards (needing a negative correction).
when there is a positive correction, this is the pattern:
29 May 10:46:11 ntpdate[25265]: step time server 195.83.66.158 offset
-167.980764 sec
29 May 10:43:23 ntpdate[25275]: step time server 75.13.24.211 offset
-167.974535 sec
29 May 10:46:18 ntpdate[25283]: step time server 75.13.24.211 offset
167.980391 sec
29 May 10:52:07 ntpdate[25322]: step time server 75.13.24.211 offset
-157.952154 sec
29 May 10:49:31 ntpdate[25338]: step time server 75.13.24.211 offset
-157.953025 sec
29 May 10:52:15 ntpdate[25356]: step time server 75.13.24.211 offset
157.953061 sec
29 May 11:14:06 ntpdate[26499]: step time server 75.13.24.211 offset
-57.821288 sec
29 May 11:13:11 ntpdate[26515]: step time server 75.13.24.211 offset
-57.820978 sec
29 May 11:14:15 ntpdate[26523]: step time server 75.13.24.211 offset
57.820636 sec
but there are also lots of isolated negative corrections, this is the
log for 2007-06-01 00:00/02:00 (chosen for no particular reason).
1 Jun 00:01:55 ntpdate[32337]: step time server 200.43.64.77 offset
-9.935709 sec
1 Jun 00:05:02 ntpdate[917]: step time server 200.43.64.77 offset
-3.971027 sec
1 Jun 00:05:26 ntpdate[930]: step time server 200.43.64.77 offset
-118.012014 sec
1 Jun 00:09:37 ntpdate[978]: step time server 200.43.64.77 offset
-93.989084 sec
1 Jun 00:11:05 ntpdate[1013]: step time server 200.43.64.77 offset
-82.005425 sec
1 Jun 00:09:48 ntpdate[1027]: step time server 200.43.64.77 offset
-82.005035 sec
1 Jun 00:11:15 ntpdate[1040]: step time server 200.43.64.77 offset
82.005701 sec
1 Jun 00:12:21 ntpdate[1058]: step time server 200.43.64.77 offset
-97.981546 sec
1 Jun 00:48:42 ntpdate[1337]: step time server 217.114.97.97 offset
-53.934183 sec
1 Jun 00:57:53 ntpdate[1398]: step time server 217.114.97.97 offset
-138.012260 sec
1 Jun 00:59:58 ntpdate[1429]: step time server 217.114.97.97 offset
-45.952144 sec
1 Jun 01:01:11 ntpdate[1457]: step time server 217.114.97.97 offset
-99.981401 sec
1 Jun 01:06:04 ntpdate[3420]: step time server 213.215.33.210 offset
-50.048028 sec
1 Jun 01:07:37 ntpdate[3449]: step time server 213.246.63.72 offset
-79.983239 sec
1 Jun 01:26:12 ntpdate[3586]: step time server 209.132.176.4 offset
-90.010730 sec
1 Jun 01:44:53 ntpdate[3718]: step time server 209.132.176.4 offset
-83.972177 sec
1 Jun 01:46:29 ntpdate[3750]: step time server 209.132.176.4 offset
-75.929826 sec
1 Jun 01:50:55 ntpdate[3789]: step time server 209.132.176.4 offset
-77.988682 sec
1 Jun 01:55:09 ntpdate[3836]: step time server 209.132.176.4 offset
-91.970655 sec
any hint, please?
thanks,
Mario
Reply to: