Bug report #19919
QGIS 2.18 faster than QGIS 3.3 DEV in processing
|Affected QGIS version:||3.3(master)||Regression?:||Yes|
|Operating System:||win 10 - osgeo4w||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:||invalid|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||27743|
qgis 2.18.24 is more performing than the master version 3.3-0.79
I did various tests with the processing tools and 2.18 is faster than the master, in particular: the processing 'counts points in the polygon':
QGIS 2.18.24 time 90 sec
QGIS DEV time 134 sec
I attach db sqlite with point tables (> 1M points) and polygons
[processing] Remove unnecessary index creation in points in polygons
...and rely instead on the data provider's spatial index.
#9 Updated by salvatore fiandaca about 3 years ago
Nyall Dawson wrote:
Yes. But I'd still love to see results for 3.2 with that feature disabled.
QGIS 3.2 is slow at first use, after a while it resumes and I can not explain why.
2.18.24 time 90 sec
3.2.3 time 90 sec
but repeating the test several times the results change little.