QGIS » QGIS Application

QGIS uses excessive amounts of memory, seemingly leaking some until it takes down my whole system. This seems to depend on adding and removing layers. In my case I noticed it with GeoJSON and Shapefile formats, I have no idea if it affects others).

Dataset used: https://transfer.sh/KghNi/b%C3%A4ume.7z (CC0 from https://opendata.bonn.de/dataset/baumstandorte)
There is a geojson and a shp inside.

QGIS takes about 320M of RAM with a clean (no project loaded, but some plugins) start for me.

1670M after loading the geojson after a clean start
2500M after adding the shp to that
3300M after removing the shp layer
4160M after adding the shp again
5000M after removing the shp layer again
(5000M after removing the geojson layer as well but that seems to get at least partially reclaimed as adding both the shp and the geojson again only made it grow to 5075M...)

 365M after loading the shp after a clean start
1720M after adding the geojson to that
1700M after removing the geojson layer
1760M after adding the geojson again

So this seemed fine (although 1.7G for a 25M GeoJSON is crazy).

 365M after loading the shp after a clean start
1720M after adding the geojson to that
2530M after removing the shp layer
3350M after adding the shp again

I did not bother going further, it would have taken more memory again.

So, loading and unloading the shp file while the geojson is loaded makes QGIS gradually eat all RAM and crash the system.

QGIS version 3.0.0-Girona
QGIS code branch Release 3.0
On Archlinux