[postgis-tickets] [PostGIS] #3587: lwgeom_mindistance2d slows down topology loading

PostGIS trac at osgeo.org
Mon Jul 4 10:19:40 PDT 2016


#3587: lwgeom_mindistance2d slows down topology loading
-----------------------+---------------------------
  Reporter:  strk      |      Owner:  strk
      Type:  defect    |     Status:  new
  Priority:  medium    |  Milestone:  PostGIS 2.2.3
 Component:  topology  |    Version:  2.2.x
Resolution:            |   Keywords:  performance
-----------------------+---------------------------

Comment (by nicklas):

 Yes, I agree it looks very strange. If you want to test the version before
 my contribution you should fire up a 1.4.

 It should be fairly easy to force the brute force method in todays code
 too. I can take a look where to search. But that will not rewind to what
 it was before I added things.

 I will try to take a look too if I can see what is happening.

 Can the prepared geometry help the intersects case, or is it only when
 quering many geometries that help?

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3587#comment:11>
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