1000x slowdown in simple tk prog on Mac OS X 10.10.1 (XQuartz 2.7.7)
1000x slowdown in simple tk prog on Mac OS X 10.10.1 (XQuartz 2.7.7)
- Subject: 1000x slowdown in simple tk prog on Mac OS X 10.10.1 (XQuartz 2.7.7)
- From: Marty Sereno <email@hidden>
- Date: Sat, 29 Nov 2014 04:58:13 -0800 (PST)
hi
I have noticed an extreme slowdown in
the performance of simple tk widget
commands in XQuartz 2.7.7 running on
Mac OS X 10.10.1.
In XQuartz 2.7.7, running on Mac OS X 10.6.8,
the following program (source'd in a wish8.5.12
compiled on 10.6.8) takes about 10 milliseconds to
finish/display:
# display 400 buttons
for {set j 0} {$j < 20} {incr j} {
frame .f$j
pack .f$j -side top
for {set i 0} {$i < 20} {incr i} {
button .f$j.b$i -text asdf
pack .f$j.b$i -side left
}
}
On XQuartz 2.7.7 runnng on Mac OS X 10.10.1,
the same program (whether X11 tcl/tk was
compiled on 10.6.8 or on 10.10.1) takes
about 10 sec to display (1000x slowdown).
(for comparison, it takes about 60 milliseconds
for this program to finish in the Apple-supplied
wish8.5.9 on Mac OS X 10.10.1).
Ticking Info X11.app "Prevent App Nap" has no
effect.
There is no change if wish window is moved during
initial draw.
There is less than 1% CPU usage during the draw.
OpenGL performance in a GLX window is acceptable.
cheers,
marty sereno
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