[Octave-bug-tracker] [bug #44485] GUI: File | Exit from main menu doesn't work when Octave is busy

[Philip Nienhuis]

Follow-up Comment #40, bug #44485 (project octave):

OK got some results.

1st run:
========
>> [V, D] = eigs (rand (1e4));   
>> ## tic/toc: takes ~146 seconds all 4 cores to complete
>> after a few seconds, File | Exit
=> after 3 seconds the popup; click Force Exit button => clean exit, no
Windows popup. Nice!

2nd run:
========
>> tic; [V, D] = eigs (rand (1e4)); toc
Again after 3 seconds, Force Exit => Return to the prompt

>> Starting again with  [V, D] = eigs (rand (1e4));
>> after 3 seconds Exit, Force Exit: no clean exit (Windows program error
popup)

3rd run:
========
[V, D] = eigs (rand (1e4));
Exit .... Force Exit
=>  no clean exit

4th run:  clean exit!
========

After running __run_test_suite__.m and again slecting File| Exit, Octave also
exits "uncleanly". I don't know if this is related.

So all in all it is clearly better but still not a "reliably" "clean" exit.
About half of the exits happen silently, the other half triggers operating
system popups.
I wonder what could be hanging that triggers Windows. Open file handles? I see
no core dump (octave-workspace) in the startup / working directory

Another thing I noted is that after several more attempts, in Task Manager (~
linux' "top") I saw 4 octave-gui.exe zombie processes taking ~4 GB of RAM
(that RAM usage was what triggered me to find what process was taking so much
RAM).


As to performance, I simply ran
tic; __run_test_suite__; toc
I tend to agree; 3 attempts with only 15 % not very reproducible results is
not reliable yet. Would there be any reason for slowdown?
BTW on Windows, on the same box, tic; __run_test_suite__; toc  takes only ~5.7
secs versus ~16 - 19 secs. for Linux. I think the reason is probably less
optimized distro libraries (I have Mageia-4). A better comparison would be an
Octave Linux build made with mxe.


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