Experimental Physics and
Industrial Control System

-----Original Message-----
From: Thompson, David H. [mailto:[email protected]]
Sent: Monday, March 12, 2007 4:30 PM
To: [email protected]
Subject: Daylight savings time

 

Something very weird just happened here and we are still trying to figure out why.

 

Running iocs were updated by just setting the TIMEZONE environment variable and all is fine.

 

Iocs that were rebooted today had the TIMEZONE variable set in a common startup script that is called before everything else.  Those IOCS seemed to display the correct time but camonitor was reporting the time an hour earlier.  The hardware timing module displayed the time an hour later than it was. The timing system was not rebooted and had the correct time on the hardware link.

 

We fixed the problem by moving the TIMEZONE setting to the post-startup script.

 

Has anyone else had similar problems?