Benchmarking 2010/Mapnik notes

= Mapnik Notes =

(for the Benchmarking 2010 exercise)

Improvements
Fixed problem with filtering features with dbf > 2GB:
 * http://trac.mapnik.org/ticket/595

Installation
Exact Installation details can be seen at: http://svn.osgeo.org/osgeo/foss4g/benchmarking/mapnik/scripts/install_mapnik_rhel_5.5.sh

Library versions used:

* libxml2-2.7.7 * zlib-1.2.5 * libpng-1.4.3 * freetype-2.4.1 * proj-4.7.0 * icu4c-4_4_1 * boost_1_43_0 * httpd-2.2.16 (only used for mod_mapnik_wms) * gdal-1.7.2 (used only for raster plugin) * postgis from RHEL packages - 8.1 headers * libjpeg from RHEL packages - old

Mapnik versions used:


 * 0.7.2 pre-release - http://trac.mapnik.org/milestone/0.7.2
 * Trunk (aka Mapnik2)

WMS Servers being tested:


 * paleoserver - trunk - http://github.com/springmeyer/paleoserver
 * mod_mapnik_wms - trunk - http://wiki.openstreetmap.org/wiki/Mod_mapnik_wms

shpindex depth
As Mapnik's shapeindex utility does not have optimized defaults, I matched the Mapserver depths used exactly ( Shptree notes  ) :

I found that deeper trees did not have much benefit so (instead of what is listed below) I simply used the default depth of 8 (which is what is used if no options are specified)



shapeindex -d 21 building.shp shapeindex -d 16 contour-0.shp shapeindex -d 17 contour-1.shp shapeindex -d 17 contour-2.shp shapeindex -d 17 contour-3.shp shapeindex -d 17 contour-4.shp shapeindex -d 15 contour-5.shp shapeindex -d 17 contour-6.shp shapeindex -d 17 contour-7.shp shapeindex -d 17 industry.shp shapeindex -d 10 motorway.shp shapeindex -d 15 point-labels-for-geometry.shp shapeindex -d 18 point-labels-no-geometry.shp shapeindex -d 14 ramp.shp shapeindex -d 14 road.shp shapeindex -d 16 settlement.shp shapeindex -d 16 track.shp