[postgis-tickets] [PostGIS] #3000: Edge linking does not use index

PostGIS trac at osgeo.org
Fri Jan 2 01:55:46 PST 2015


#3000: Edge linking does not use index
--------------------------+-------------------------------------------------
  Reporter:  strk         |       Owner:  strk         
      Type:  enhancement  |      Status:  closed       
  Priority:  medium       |   Milestone:  PostGIS 2.2.0
 Component:  topology     |     Version:  trunk        
Resolution:  fixed        |    Keywords:  performance  
--------------------------+-------------------------------------------------

Comment(by strk):

 Thanks. _ST_AddFaceSplit is on my radar already.

 It's interesting to see 5 seconds spent in 111k SELECTs into "topo"."face"
 with simple "face_id" = X operation. Given you loaded 12k polygons, that's
 10x selects for each input row (but this would be better discussed on the
 mailing list than here).

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/3000#comment:7>
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