Bug report #14792
Memory leak with big Shapefile
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Data Provider | ||
| Affected QGIS version: | 2.14.2 | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 22749 |
Description
I have just found a memory leak in QGIS Desktop (and server) with the project available in [1] ( a 20Mo tar.bz2 )
This is a very simple project with only one buildings Shapefile ( SHP 68Mo). This layer has been exported from PostGIS from a query wich aimed to simplify the building for fast rendering.
The geometries have been simplified ( I used SnapToGrid, then (St_Dump(St_Union(a.geom))) to remove as many nodes as possible )
The layers has ~ 700 000 features.
steps to reproduce the bug, and the precautions to take :
- open the project in QGIS 2.14 ( I have not tested with older versions)
- open a terminal and use this kind of command to monitor QGIS memory consumption : htop, or ps with
watch -n1 'ps -aux --sort -pmem | head -5'
- Navigate through the project by zooming in and out, pan, etc. I think you emphasize the memory leak by displaying the layer at small scale ( with many buildings displayed)
- Be aware that this will increase the memory, so keep an eye on the memory consumption so that your system has enough free memory to work properly.
I have no memory leak when using the same dataset in PostGIS ( tested by importing the Shapefile in PostGIS with shape2pgsql )
[1] https://framadrop.org/r/_7VsZtvzdU#+eJHHPPOIdVcgj/AUp8V91T9m6gmO7/XCh6uOhzP7ro=
History
#1
Updated by Giovanni Manghi almost 8 years ago
- Status changed from Open to Feedback
fixed in master, correct?
#2
Updated by Michael Douchin almost 8 years ago
- Priority changed from High to Normal
- Status changed from Feedback to Closed
It has indeed been fixed in master and backported to release 2.14