On 2010-07-14 19:11:58 +0200, K.-Michael Aye said: > On 2010-07-14 18:51:26 +0200, K.-Michael Aye said: > >> On 2010-07-14 18:45:35 +0200, John Hunter said: >> >>> On Wed, Jul 14, 2010 at 11:38 AM, K.-Michael Aye >>> <kmichael....@gmail.com> wrote: >>> >>>> Out[12]: 1 >>>> >>>> In [13]: gc.collect() >>>> >>>> Out[13]: 12 >>> >>> >>> still not seeing a leak in your data -- you need to report_memory >>> after calling gc collect. Turn off hold, add an image, call collect, >>> report memory, the repeat several times, each time calling collect and >>> report memory, and report the results. >> >> Was just following your example, you were nowhere calling collect. >> Here is what you requested: >> >> In [1]: import gc >> >> In [2]: import matplotlib.cbook as cbook >> >> In [3]: data = ones((1500,1500,3)) >> >> In [4]: hold(False) >> >> In [5]: imshow(data) >> >> Out[5]: <matplotlib.image.AxesImage object at 0x1c43e50> >> >> In [6]: gc.collect() >> >> Out[6]: 12 >> >> In [7]: cbook.report_memory() >> >> Out[7]: 174540 >> >> In [8]: imshow(data) >> >> Out[8]: <matplotlib.image.AxesImage object at 0x1c59e90> >> >> In [9]: gc.collect() >> >> Out[9]: 0 >> >> In [10]: cbook.report_memory() >> >> Out[10]: 253400 >> >> In [11]: imshow(data) >> >> Out[11]: <matplotlib.image.AxesImage object at 0x1c603b0> >> >> In [12]: gc.collect() >> >> Out[12]: 0 >> >> In [13]: cbook.report_memory() >> >> Out[13]: 333360 >> >> In [14]: imshow(data) >> >> Out[14]: <matplotlib.image.AxesImage object at 0x1c60410> >> >> In [15]: gc.collect() >> >> Out[15]: 0 >> >> In [16]: cbook.report_memory() >> >> Out[16]: 413296 >> > > > Here are the commands as macro form, for easy cut and paste into pylab: > > import gc > import matplotlib.cbook as cbook > data = ones((1500,1500,3)) > hold(False) > imshow(data) > gc.collect() > cbook.report_memory() > imshow(data) > gc.collect() > cbook.report_memory() > imshow(data) > gc.collect() > cbook.report_memory() > imshow(data) > gc.collect() > cbook.report_memory()
Furthermore, deleting images from ax.images does not free memory : In [1]: import gc In [2]: import matplotlib.cbook as cbook In [3]: data = ones((1500,1500,3)) In [4]: imshow data ------> imshow(data) Out[4]: <matplotlib.image.AxesImage object at 0x1c57550> In [5]: imshow data ------> imshow(data) Out[5]: <matplotlib.image.AxesImage object at 0x1c442b0> In [6]: imshow data ------> imshow(data) Out[6]: <matplotlib.image.AxesImage object at 0x1400cd0> In [7]: imshow data ------> imshow(data) Out[7]: <matplotlib.image.AxesImage object at 0x1414cb0> In [8]: ax =gca() In [9]: ax.images Out[9]: [<matplotlib.image.AxesImage object at 0x1c57550>, <matplotlib.image.AxesImage object at 0x1c442b0>, <matplotlib.image.AxesImage object at 0x1400cd0>, <matplotlib.image.AxesImage object at 0x1414cb0>] In [10]: gc.collect() Out[10]: 15 In [11]: cbook.report_memory() Out[11]: 414588 In [12]: del ax.images[:-1] In [13]: gc.collect() Out[13]: 3 In [14]: cbook.report_memory() Out[14]: 414600 ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
