[geos-devel] [GEOS] #982: Postgis ST_ConcaveHull Runtime GEOS Problem?

GEOS geos-trac at osgeo.org
Fri Aug 2 12:35:45 PDT 2019

#982: Postgis ST_ConcaveHull Runtime GEOS Problem?
 Reporter:  tsw         |      Owner:  geos-devel@…
     Type:  defect      |     Status:  new
 Priority:  major       |  Milestone:
Component:  Default     |    Version:  3.7.0
 Severity:  Unassigned  |   Keywords:
 A concave hull query with the attached data set under Postgresql 9.4 /
 PostGIS 2.2 / Geos 3.5.0 runs in under a second.

 The same query using the same data on Postgresql 9.6 / PostGIS 2.5.2 /
 GEOS 3.7.1 is still running after 30 minutes.

 I've also attached a perf top screen shot which to me implies this is a
 GEOS problem.

Ticket URL: <https://trac.osgeo.org/geos/ticket/982>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).

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