Experimental Physics and
Industrial Control System

Brian Bevins <[email protected]> · Wed, 21 Jan 2009 11:46:40 -0500

Hi Zen,

It depends on exactly what you mean when you say the EDM "freezes". What

you're describing might be an instance of one of two known problems.

1) There were problems with embedded and related displays that were not

fully resolved until 1-11-1z. The problem was especially acute with "on

focus" related displays that pop up when you just mouse over the widget

with no click, but there were other associated issues with embedded and

related displays. Depending on the specific version you could see

anything from stuck popups that won't close to EDM freezing completely

(no screen redraws at all) to EDM crashing.

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.

Hope that helps.
--Brian

Szalata, Zenon M. wrote:

I am observing that EDM freezes with my application which uses a number of related displays.  This happens when I pop up the related displays a few times.  It is not very reproducible, sometimes it happens after a few clicks on the related display buttons, at other times the application will survive many such clicks.
I have a vague memory of an e-mail when someone else reported a similar problem, but I cannot find any evidence of that.

I am currently using edm 1.11.1t.

Is this a known problem and if so, has the issue been resolved?

Thanks in advance,
Zen

--

Brian S. Bevins, PE
Computer Scientist / Mechanical Engineer
Thomas Jefferson National Accelerator Facility

    "Nothing in all the world is more dangerous than
     sincere ignorance and conscientious stupidity."
                                    --Martin Luther King Jr.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System