Even, Yes, this is on the same machine. The driver is GeoTIFF (I haven't tried other ones) with external overviews.
Adam On Fri, Dec 11, 2009 at 12:41 PM, Even Rouault <[email protected]> wrote: > Adam, > > I assume that you're testing on the same machine. Such difference is not > expected. Do you see that slowdown with different GDAL drivers or just for > one in particular (which one?) > > Windows builds are able to use overviews. But are you speaking about > internal GeoTIFF overviews or about external overviews (.ovr files) ? > > Even > > Adam Kubach a écrit : >> >> Hi, >> >> It appears that my calls to RasterIO are about 10 times slower on >> Windows than Linux when reading from the same dataset. I wouldn't >> think that there would be a noticeable difference. Has anyone else >> seen this? Is it possible that the overviews aren't being used on >> Windows? Is there anyway I can verify that they are being used (Other >> than a debugger)? >> >> Thanks, >> Adam >> _______________________________________________ >> gdal-dev mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/gdal-dev >> >> >> >> > > > _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
