id summary reporter owner description type status priority milestone component version resolution keywords cc 4469 ST_ConcaveHull Runtime tsw pramsey "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 to help people identify the possible source of the problem." defect closed critical PostGIS GEOS postgis 2.5.x -- EOL fixed