[Octave-bug-tracker] [bug #53005] Variable editor: slow performance with large arrays

[Rik]

URL:
  <http://savannah.gnu.org/bugs/?53005>

                 Summary: Variable editor: slow performance with large arrays
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Mon 29 Jan 2018 01:49:58 PM PST
                Category: GUI
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: Confirmed
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

With large arrays there seems to be a slowdown whenever the array is updated. 
This problem is *only* present when the preference item "Autofit" is checked.

Sample Code:


x = rand (1000);
openvar x
# There is a delay as something is calculated and then the Variable Editor
shows x
y = 1
# There is a delay, approximately the same length as the first one
z = 2
# There is the same delay, after every statement is executed.  It appears as
# if at the end of each event loop the "openvar" command is being re-executed
# despite the fact that I haven't changed 'x'.







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