I recommend using the garbage collector module manually to override the defaults. Python for some reason doesn't reclaim memory fast. So if you put in your code: import gc gc.collect() (at the right spots, probably after the file chooser dialog and after some memory intensive tasks). You should notice a lot of memory being free'd up.
-Alex On Sunday 30 December 2007 05:20:34 pm Jayesh Salvi wrote: > Hi, > > I am porting a pygtk application to maemo. It works alright, but I > noticed that it was consuming lot of memory, preventing me from opening > other applications. > > When I investigated, I found that my python application was forking 4 > more instances of itself, each one identical in memory footprint. Thus > they consumed nearly 60-70% of my memory. > > So I ran my application using pdb and narrowed down to a code segment > that was leading to multiple instances of the process. It turned out > that when I call run() on hildon.fileChooserDialog object, the dialog > opens and at that moment in the "top" I see 4 more instances being > forked. > > I fail to understand this behavior. I replaced the hildon widgets by > pure gtk widgets and I see similar behavior, except that 2 more > instances get forked. Also when using gtk.FileChooserDialog, these new > instances get created in the instantiation of the dialog object, rather > than call to run(). (code included below) > > So to further explore the problem, I ran same application on my desktop > with gtk widgets. But I verified that when fileChooserDialog's run is > called, there are no additional instances of python. > > I am running this code on n770, with 2007 HE and python2.5 runtime. My > application code is pure python and not using any additional libraries. > In fact following would be a simpler version of it to reproduce the > problem: > > import gtk > import hildon > > #window = gtk.Window(gtk.WINDOW_TOPLEVEL) > > #fileChooser = gtk.FileChooserDialog( > # title="Choose a photo to publish", > # buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, > # gtk.STOCK_OK, gtk.RESPONSE_OK)) > > fileChooser = hildon.FileChooserDialog( > window,gtk.FILE_CHOOSER_ACTION_OPEN) > > > result = fileChooser.run() > > if result == gtk.RESPONSE_OK: > print fileChooser.get_filename() > > Do you have any tips, as to what might be going wrong? > > This problem is fatal at least on n770 - it will trigger low memory > message when other applications are used on the side. > > Any help will be useful. > > Thanks, _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
