Hi, I'm looking at PostGIS geometry GiST index build times and try to optimize withing the current GiST framework. The function that shows a lot on my flame graphs is penalty.
I spent weekend rewriting PostGIS penalty to be as fast as possible. (FYI https://github.com/postgis/postgis/pull/425/files) However I cannot get any meaningfully faster build time. Even when I strip it to "just return edge extension" index build time is the same. Is there a way to inline the penalty into above "choose subtree" loop somehow? That would also let us stop bit-fiddling floats to simulate a more complex choosing scheme. -- Darafei Praliaskouski Support me: http://patreon.com/komzpa
