[postgis-tickets] [PostGIS] #3864: Sorting by geometry is slower than sorting by geohash

[PostGIS]

#3864: Sorting by geometry is slower than sorting by geohash
----------------------+---------------------------
  Reporter:  komzpa   |      Owner:  pramsey
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 2.4.1
 Component:  postgis  |    Version:  2.3.x
Resolution:  fixed    |   Keywords:
----------------------+---------------------------

Comment (by komzpa):

 After recompiling Postgres for server's target architecture and enabling
 -Ofast, on latest trunk - we're 12% slower than GeoHash instead of initial
 20%:

 {{{
 [local] gis at gis=# create table juno_osm_point_pt1_fastmath as (select *
 from juno_osm_point_unclustered ORDER BY
 ST_GeoHash(ST_Transform(ST_Envelope(way),4326),10) COLLATE "C");
 SELECT 159843185
 Time: 928645,823 ms (15:28,646)
 [local] gis at gis=# create table juno_osm_point_pt2_fastmath as (select *
 from juno_osm_point_unclustered ORDER BY way);
 SELECT 159843185
 Time: 1052055,649 ms (17:32,056)

 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3864#comment:24>
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