[postgis-devel] Bugs in gserialized_gist_compress_2d

[Alexander Korotkov]

On Thu, Sep 26, 2013 at 3:00 AM, Paul Ramsey <pramsey at cleverelephant.ca>wrote:

> OK, I've ticketed it, for what that's worth. I do believe it's an
> important correctness issue.
>
> http://trac.osgeo.org/postgis/ticket/2487
>
> Since I have you here... any guesses on this?
>
> http://obartunov.livejournal.com/174411.html


This benchmark is about geography indexing of which is defined in
gserialized_gist_nd.c. I've touched only gserialized_gist_2d.c before.
I supposed geography GiST would be much slower than pgSphere, but 2 orders
of magnitude surprises me. It should be not only bad splitting algorithm,
but also some bugs among opclass.

------
With best regards,
Alexander Korotkov.
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