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Slew time instead of falling back one hour

Paul Edward Johnson
Occasional Contributor

Slew time instead of falling back one hour

I have a situation where I need to gradually slew the one hour "fall back" at the end of the daylight savings time interval. We cannot handle a sudden one hour falling back - we time stamp too many processes. In the spring it is OK - we don't end up with duplicate time stamps - in the fall we end up with duplicate time stamps of our processes.
4 REPLIES
Volker Halle
Honored Contributor

Re: Slew time instead of falling back one hour

Paul,

is this a HP-UX or OpenVMS question ?

On OpenVMS, this can be easily done with some kernel-mode programming. There are even some example programs available:

http://dcl.openvms.org/stories.php?story=04/11/01/4992648

For more examples, search in google for 'exe$gl_timeadjust'

The examples may need to be adopted for your situation. You would want the OpenVMS system time run slower for a couple of hours. I've once done this in a customer situation to recover from a 24 hour clock forward jump (ES47/MARVEL SET TIME problem).

Volker.
Jim_McKinney
Honored Contributor

Re: Slew time instead of falling back one hour

Paul Edward Johnson
Occasional Contributor

Re: Slew time instead of falling back one hour

sorry - this is an hp-ux specific question. I must have been in the wrong place when I posted
Paul Edward Johnson
Occasional Contributor

Re: Slew time instead of falling back one hour

.