[Qgis-developer] Possible memory leak in rendering code

Matthias Kuhn matthias.kuhn at gmx.ch
Mon Apr 22 01:54:04 PDT 2013

Hi Alex,

I found in the past particularly two things making the rendering more 
* Disable Render Cache
* Enable Backbuffer (only availale in X11/Linux)

Can you check if one of these two changes in the options fix this issue?
(Restart after changing)


On Mon 22 Apr 2013 10:50:29 CEST, Alexander Bruy wrote:
> Hi all,
> working on QTiles plugin we found one odd issue — when number of
> canvas redraws is relatively big (around 200 000 - 300 000) QGIS
> crashed with segmentation fault. Seems there is a memory leak
> somewhere.
> I'll try to debug this more, but as I'm  not very familiar with rendering code any help and suggestions are welcome. Small test
> plugin to replicate this issue attached. Also it is possible to use
> QTiles plugin for this: just set extent and zoom levels so number of
> tiles is greater that 200 000 and start process. QGIS will crash
> at 60-70%.
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