NTP drift

[Rupert_1]

Hi,

NTP server rp8400 HP-UX the time zone is EAT
NTP client DS20E Tru64 Unix time zone is GMT +8
The NTP has been running for 6 months without problem. Recently when I rebooted the DS20E, I found the drifting is 16-18hrs for NTP client, so now I stopped the NTP daemon.
What is the problem ? Enclosed is the attachment of ntp.conf and ntplogs.
Thks.

[Ivan Ferreira]

I think that the problem is because the extrange naming conventions of the time zone. For example:

zdump GMT
GMT Mon Dec 19 05:24:07 2005 GMT

zdump GMT+8
GMT+8 Sun Dec 18 21:19:54 2005 GMT+8

zdump GMT-8
GMT-8 Mon Dec 19 13:20:45 2005 GMT-8

The date shows my system current time.

zdump GMT+8 shows that the system will substract hours to UTC time.

zdump GMT-8 will add hours to the UTC time.

See also:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=969422


Also, you can use ntpdate -b ntpserver to set the time to your system before starting the ntp daemon.