Re: EDM freezes

[Brian Bevins <bevins@jlab.org>]

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.