Experimental Physics and
Industrial Control System

Brian Bevins <[email protected]> · Thu, 22 Jan 2009 11:48:56 -0500

We have seen this with every version of EDM we have used on Linux, from

1-10-2 built against EPICS 3.13.2.0 to our current 1-11-1z built against

3.14.8.2. We did not have the problem with 1-10-2/3.13.2.0 (or any

previous version) on HP-UX, which was the last version we used on HP-UX.

We get the same behavior with RHEL 3, RHEL 4, and RHEL 5 systems. It

does not seem to depend on the window manager in use or on the version

of the X server or on which X extensions are loaded.

--Brian

John Sinclair wrote:

If you have observed this behavior, please indicate which version of

EPICS base you are using. This would also be nice to have for my

testing efforts.

As a stopgap, I will build an event monitor into a future version of

edm which will watch for loss of event activity in some configurable

manner and at least notify the user.

John Sinclair

Dave Reid wrote:

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.

We here at the UW Medical Center have also seen this behavior,

running EDM on Debian Linux.

dave reid
University Of Washington Medical Center

--
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