Re: [matplotlib-devel] Memory leaks

[Eric F. <ef...@ha...>]

Michael Droettboom wrote:
> Eric Firing wrote:
>> Attached are runs with gtk, wx, qtagg, and tkagg.  Quite a variety of 
>> results: tkagg is best, with only slow memory growth and a constant 
>> number of python objects; qtagg grows by 2.2k per loop, with no 
>> increase in python object count; wx (which is built on gtk) consumes 
>> 3.5k per loop, with an increasing object count; gtk consumes 1.8k per 
>> loop with an increasing object count.
>>
>> All runs are on stock ubuntu feisty python 2.5.
> Thanks for these results.  Unfortunately, I'm seeing different results 
> here.  [dagnabbit!]  None of them have an increasing object count for 
> me, which leads me to suspect there's some version difference between 
> your environment and mine that isn't being accounted for.
> 
> Gtk[Agg|Cairo] -- 1.3k per loop.
> Wx[Agg] -- 0.010k per loop
> QtAgg -- 2.3k per loop (which is in the same ballpark as your result)
> Qt4Agg -- 1.4k per loop (which seems to be in the same ballpark as 
> Darren Dale's result)
> TkAgg -- 0.29k per loop
> 
> I don't know if the size of memory per loop is directly comparable 
> between your environment and mine, but certainly the shape of the curve, 
> and whether the number of Python objects is growing is very relevant.
> 
> I made some more commits to SVN on 07/03/07 necessary for recent 
> versions of gtk+ and qt.  Did you (by any chance) not get those 
> patches?  It would also be interesting to know which versions of the 
> toolkits you have, as they are probably different from mine.  Is it safe 
> to assume that they are all the stock Ubuntu feisty packages?  In any 
> case, I have updated memleak_gui.py to display the relevant toolkit 
> versions.  I've also attached a script to display the toolkit versions.  
> Its output on my machine is:
> 
> # pygtk version: (2, 10, 4), gtk version: (2, 10, 9)
> # PyQt4 version: 4.2, Qt version 40300
> # pyqt version: 3.17.2, qt version: 30303
> # wxPython version: 2.8.4.0
> # Tkinter version: $Revision: 50704 $, Tk version: 8.4, Tcl version: 8.4

Here is mine--not very different from yours:

# pygtk version: (2, 10, 4), gtk version: (2, 10, 11)
# PyQt4 version: 4.1, Qt version 40202
# pyqt version: 3.17, qt version: 30307
# wxPython version: 2.8.1.1
# Tkinter version: $Revision: 50704 $, Tk version: 8.4, Tcl version: 8.4

Everything is stock ubuntu feisty.  wx is built on gtk.
I'm pretty sure I did the tests after your 07/03/07 commits.

I just updated from svn and tried to rerun the wx test, but ran into an 
error:

efiring@manini:~/programs/py/mpl/tests$ python 
../matplotlib_units/unit/memleak_gui.py -dwx -s1000 -e2000 > 
~/temp/memleak_wx_0705.asc
Traceback (most recent call last):
   File "../matplotlib_units/unit/memleak_gui.py", line 58, in <module>
     pylab.close(fig)
   File "/usr/local/lib/python2.5/site-packages/matplotlib/pylab.py", 
line 742, in close
     _pylab_helpers.Gcf.destroy(manager.num)
   File 
"/usr/local/lib/python2.5/site-packages/matplotlib/_pylab_helpers.py", 
line 28, in destroy
     figManager.destroy()
   File 
"/usr/local/lib/python2.5/site-packages/matplotlib/backends/backend_wx.py", 
line 1403, in destroy
     self.frame.Destroy()
   File 
"/usr/local/lib/python2.5/site-packages/matplotlib/backends/backend_wx.py", 
line 1362, in Destroy
     wxapp.Yield()
NameError: global name 'wxapp' is not defined


Eric