[gdal-dev] How to improve gdal_rasterize perfomance?
peifer at gmx.eu
Thu Sep 17 04:31:36 EDT 2009
Frank Warmerdam wrote:
> This sounds like a heap of processing that needs to be done.
> You can increase the chunk size on which gdal_rasterize operates by
> increasing the GDAL_CACHEMAX config option. I would suggest sizing
> it to be roughly 1/3 of your machine RAM.
> gdal_rasterize --config GDAL_CACHEMAX 600 ...
> would be appropriate on a machine with 2GB of RAM.
> Beyond that I can't think of much that might help. The above basically
> reduces the number of passes needed through the vector data. It is all
> processed once for each chunk of the raster that is processed.
Could the performance be improved by optimizing my blank tif: e.g.
compressed or not, tiled or not?
More information about the gdal-dev