Re: [Matplotlib-users] twinx memory leak

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

Which backend?

Cheers,
Mike

Manuel Metz wrote:
> Michael Droettboom wrote:
>> Thanks for the report.  So we can diagnose this, what version of 
>> matplotlib are you reporting this for?
>>
>> Also, you may be interested in the following FAQ (and the one 
>> following it):
>>
>> http://matplotlib.sourceforge.net/faq.html#LEAKS
>
> Hi,
>
>   I tested this with the lastest svn, and I do also see a leak. But 
> it's not related to twinx, but to pylab.close(). If I just comment out 
> this one line, the memleak disappears ...
>
> Manuel
>
>> Cheers,
>> Mike
>>
>> laurent oget wrote:
>>> i forgot two imports.
>>>
>>> import math
>>> import gc
>>> import pylab as PL
>>>
>>>
>>> def looptest():
>>>     while(1):
>>>         fig=PL.figure(1)
>>>         ax=fig.add_subplot(211)
>>>         ax.set_position((0,0,0.9,0.45))
>>>         ax1=PL.twinx(ax)
>>>         t=range(1000)
>>>         st=[math.sin(x*0.01) for x in t]
>>>         ax.plot(t,st)
>>>         fig.clf()
>>>         PL.close(1)
>>>         gc.collect()
>>>         print "GC"
>>>         print len(gc.get_objects())
>>>         print len(gc.garbage)
>>> looptest()
>>> 2008/7/11 laurent oget <la...@og... <mailto:la...@og...>>:
>>>
>>>     I think i narrowed down the memory leak i have been chasing for a
>>>     while.
>>>     If i remove the call to twinx i get a slow leak, which would cause
>>>     me trouble
>>>     after a very long time. With the call to  twinx, however i am
>>>     losing thousands of objects
>>>     at each loop.
>>>
>>>     Thanks,
>>>
>>>     Laurent
>>>
>>>
>>>     >>>>>>>>>>>>>>>>>>>>>>>>>          import pylab as PL
>>>     def looptest():
>>>         while(1):
>>>             fig=PL.figure(1)
>>>             ax=fig.add_subplot(211)
>>>             ax.set_position((0,0,0.9,0.45))
>>>             ax1=PL.twinx(ax)
>>>             t=range(1000)
>>>             st=[math.sin(x*0.01) for x in t]
>>>             ax.plot(t,st)
>>>             fig.clf()
>>>             PL.close(1)
>>>             gc.collect()
>>>             print "GC"
>>>             print len(gc.get_objects())
>>>             print len(gc.garbage)
>>>     looptest()
>>>     >>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>
>>>
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>>
>

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA