[ntp:questions] ntpd oddness

Unruh unruh-spam at physics.ubc.ca
Wed Apr 2 21:39:17 UTC 2008

John Oliver <joliver at john-oliver.net> writes:

>On Wed, 02 Apr 2008 09:58:38 +0200, Martin Burnicki wrote:
>> What's the output of:
>> date -u; date

>[root at 0123456789-VCS ~]# date -u; date
>Wed Apr  2 20:29:25 UTC 2008
>Wed Apr  2 20:29:25 GMT 2008

>>> [joliver at 0123456789-VCS ~]$ /sbin/hwclock
>>> Tue 01 Apr 2008 09:05:39 PM GMT  -0.323329 seconds
>>> [joliver at 0123456789-VCS ~]$ sudo /sbin/hwclock --systohc
>>> [joliver at 0123456789-VCS ~]$ /sbin/hwclock
>>> Tue 01 Apr 2008 09:05:52 PM GMT  -0.776568 seconds
>> Normally the system time is only initialized from the hwclock (the RTC chip
>> on the mainboard) at boot time, and when the system shuts down properely
>> the current system time should be written back to the hwclock. In most
>> cases you see this in the console messages.
>> If you have a dual/multi boot system then you must take care that all
>> operating systems assume the RTC to run at the same time, i.e. either local
>> time or UTC.

>There is only one OS on the host(s) in question.

Good-- information not available to us. 

>> If the system is Linux only I'd suggest you configure your Linux system such
>> that the RTC chip keeps UTC time only. If then the time is not correct
>> after a reboot your on-board battery may be low.

>There are no reboots.  The above example is one command after another...
>read the hwclock, set it from the system time, and then immediately read
>it again.  I don't see how this could be a hardware issue, unless this
>chip is specifically programmed to always add/subtract 12 hours from the
>time it's set to, which I rather doubt :-)

cat /etc/sysconfig/clock

and post the output here. 
Anyway, none of this has anything to do with ntp at all. It would be best
to go to a Linux group for your particular distribution.

>* John Oliver                              http://www.john-oliver.net/ *

>Posted via a free Usenet account from http://www.teranews.com

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