[postgis-devel] Much slower processing on GEOS 3.9.0 versus 3.8.0 for geodesic area calculation - Upgrade to PROJ 7.2.1 causes issue

Mike Taves mwtoews at gmail.com
Wed Apr 28 15:13:55 PDT 2021

The thing I'm confused about (geodesic area via ST_Area), is that it
does not require any transformations. It only requires an ellipsoid
definition. The computation is done via geodesic.c/.h from
GeographicLib, which is the sole C file in PROJ.

A possibility for the slowdown is that one of the components was
compiled without optimization. E.g. with PROJ, doing "cmake .."
without specifying "-DCMAKE_BUILD_TYPE=Release" would build an
un-optimized PROJ.

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