Bug report #13569

memory leak in renderer

Added by Regis Haubourg over 8 years ago. Updated over 8 years ago.

Category:Map Canvas
Affected QGIS version:master Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:fixed/implemented
Crashes QGIS or corrupts data:Yes Copied to github as #:21611


When triggering redraws, especially on big projects, memory slowly or rapidly increases. High memory usages leads sometimes to crash.

Issue dicussed and confirmed here: [[http://osgeo-org.1560.x6.nabble.com/Possible-memory-leak-in-QGIS-redraws-td5228794.html]]

noplugin option does not help. It has been present at least since 2.4. 2.6 is severely touched, when 2.8 is better. 2.10 and master stil affected

We need to narrow that issue down since it is a real blocker for long sessions and big project.


#1 Updated by Nyall Dawson over 8 years ago

Are you able to share some more details which may help? Specifically:

- what renderers & symbol styles are active in your project?
- does disabling all labeling help?

I've been unable to track any leaks within QGIS but also see this memory usage increase. My current hunch is that the leak is either within Qt or the geos library (they are the only possibly relevant leaks reported under valgrind).

#2 Updated by Nyall Dawson over 8 years ago

  • Status changed from Open to Feedback

#3 Updated by Giovanni Manghi over 8 years ago

  • Resolution set to fixed/implemented
  • Status changed from Feedback to Closed


suggest that this has been fixed and what is not it will be with the switch to qt5. Please reopen of necessary.

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