[Octave-bug-tracker] [bug #46910] Octave hangs on extremely slow ghostscript on Windows when printing figures

[Markus Mützel]

Update of bug #46910 (project octave):

              Item Group:             Performance => Regression             
                  Status:               Need Info => Confirmed              
                 Release:                   4.0.0 => dev                    

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Follow-up Comment #10:

I can confirm that the figure can be plotted very fast on Windows 10 with
Octave 4.2.1. I also cannot re-produce with Octave 4.3.0+ hg id "5570b0f12112"
(qt4).
However, I am seeing the issue again on a more recent build with hg id
"c2ef0eddf6bc" and 3 later builds that were build with qt5.

When issuing the print command, Octave stops responding and "gs.exe" uses one
core indefinitely (25% CPU usage on a quad-core). After 20 minutes, it was
still not finished. It also doesn't stop using the CPU when I kill Octave.

This can also be re-produced with:

plot ([0 1]);
print ("plot.eps")


Printing succeeds and is fast with "graphics_toolkit gnuplot".

I don't know whether this has something to do with the switch from qt4 to qt5
or with something else that has changed between these builds.

Marking as a regression on dev.

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