[QGIS-trac] [Quantum GIS] #3388: Performance issue with new symbology

[Quantum GIS]

#3388: Performance issue with new symbology
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   Reporter:  zicke                             |              Owner:  nobody       
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.7.0
  Component:  Symbology                         |            Version:  Trunk        
   Keywords:                                    |   Platform_version:               
   Platform:  RedHat                            |           Must_fix:  No           
Status_info:  0                                 |  
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 Hi

 I have some performance issues with the new generation symbology. Using a
 polygon layer [1] with a categorized symbology [1]. Up to a scale to
 approx. 1:200 there are no issues and rendering is as fast as with the old
 symbology. But between approx. 1:200 - 1:1 it slows down and eating 100 %
 CPU for half a minute sometimes even longer. This does happen on several
 (RedHat, Ubuntu) Linux systems with different QT versions. On a Windows XP
 machine with OSGEO4W install there are no performance issue (but it fills
 the polygons black sometimes when zoomed in).

 [1]: http://www.catais.org/qgis/mopublic.zip

 regards
 Stefan

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/3388>
Quantum GIS <http://qgis.org>
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