[Gdal-dev] DTED Performance on Windows

[Frank Warmerdam]

Collins, Benjamin wrote:
> All,
> 
> I'm not sure that this is the same issue, but I have seen some pretty
> terrible performance generally on non-byte datasets loaded under
> Windows with the NITF driver.  DTED 2 is such a file.  For me, the
> gdaladdo command took 10x longer for an int16 NITF than for the same
> GeoTIFF reduced to byte depth.

Ben,

gdaladdo goes into a much more generic double precision case for
non-eight data, so that might be part of the issue, but I'm surprised
the difference is so dramatic.

Best regards,
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