[gdal-dev] Performance issues with gdal vrt

[Craig Leat]

Hi,

I have filed a new ticket for this:
http://trac.osgeo.org/gdal/ticket/3165

A summary of my tests with gdalinfo -mm
Processing 9 .sid files via a .vrt takes 2h:47m
Processing 9 .sid files directly takes 0h:57m
Processing 24 .tif files via a .vrt takes 0h:27m
Processing 24 .tif files directly takes 0h:9m
Working via a .vrt is approximately three times slower than working
with the tiles directly and working with .sid files is much slower
than .tif files.

Regards,

Craig