Re: [matplotlib-devel] memory leak in pcolor and pcolormesh

[Michael D. <md...@st...>]

Thanks for finding this.

This should be fixed in r4881.  It was a simple reference counting bug.

Please let me know if you still see leaks.

Cheers,
Mike

Eric Firing wrote:
> Rob Hetland wrote:
>> I am using the new transforms version of MPL (the svn trunk), and  
>> found a memory leak in pcolor and pcolormesh.  Be warned, I just  
>> reported a memory leak in the scikits delaunay package that Robert  
>> Kern was not able to reproduce, so it might be nice if someone could  
>> check this out.  I am on Mac OS X, 10.4 using the latest svn versions  
>> of numpy and mpl.  Here is the code that shows the leak:
>>
> 
> I have confirmed this on linux.
> 
> Eric
> 
>> from pylab import figure, close, ioff, savefig
>> from numpy.random import rand
>>
>>
>> ioff()
>>
>> for n in range(1000):
>>      fig = figure()
>>      ax = fig.add_subplot(111)
>>      data = rand(1000, 1000)
>>      ax.pcolormesh(data)
>>      savefig('foo.png')
>>      close(fig)
>>      print n
>>
>>
>>
>> I get over a gig in real and virtual memory (over 2 gig total) by  
>> n=30.  I tried both pcolor and pcolormesh, as well as deleting  
>> various objects, clearing the axis, etc.
>>
>> -Rob
>>
>> ----
>> Rob Hetland, Associate Professor
>> Dept. of Oceanography, Texas A&M University
>> http://pong.tamu.edu/~rob
>> phone: 979-458-0096, fax: 979-845-6331
>>
>>
>>
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA