Bug report #8889

Slow "selection" of features

Added by Jonathan Moules about 9 years ago. Updated about 6 years ago.

Affected QGIS version:2.0.1 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:fixed/implemented
Crashes QGIS or corrupts data:No Copied to github as #:17568


I have two layers in my project:

1) An oracle layer with 32 features.
2) A shapefile with 53345 features.

If I have the shapefile enabled and displayed (all features are on-screen), then any time I use the selection tool to select a oracle feature, QGIS takes a second or so to actually select it. I suspect QGIS is re-rendering the shapefile (it's fully styled); even when the features I've selected have absolutely no overlap with the shapefile (thus QGIS shouldn't need to).

If I disable the shapefile, or pan off screen from it, selection works fine and fast.

Related issues

Related to QGIS Application - Feature request #2037: Enable multi-threaded rendering in QGIS Closed


#1 Updated by Jürgen Fischer over 8 years ago

  • Category set to Vectors

#2 Updated by Nyall Dawson about 6 years ago

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

Not an issue in current versions

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