Experimental Physics and
Industrial Control System

John Sinclair <[email protected]> · Wed, 21 Jan 2009 17:17:55 -0500

2) There is a more subtle ongoing problem that (as far as I know) has

only been reported here at Jefferson Lab. When an EDM session has been

left running for a long (variable) time, the widgets will stop

updating despite the fact that the PV values are still changing. There

is no visual clue that anything is wrong, unless you can see the same

PV's in a different app or a separate EDM session. Usually everything

will start updating again if you open or close a display, or even

expose a covered display. This issue only started when we moved from

HP-UX to RedHat Enterprise Linux. It has not yet been resolved.

It would be interesting to know more about this. If you mouse over

a display element like a text control and do a control-middle-mouse

click you will get something like the following in the message window.

------------------------------------------------

Text Control (105,46): b:Vgc12-1Ig1:PressureR
  Host: orib60.phy.ornl.gov:5064
  Num times conected = 1
  Num times disconected = 0
  Num value changes = 1
  Num references = 2
  Time stamp = Wed Jan 21 17:11:00 2009

------------------------------------------------

It would be nice to know if the various pvs that were no longer updating

had any things in common like hostname, timestamp, or if any of the

numeric values looked fishy (negative values, etc.).

John Sinclair

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System