[gdal-dev] GDAL slow to write GeoTIFF?

[David Strip]

On 4/27/2015 9:11 AM, Even Rouault wrote:
> Le lundi 27 avril 2015 16:55:24, jramm a écrit :
>> > I'm writing a custom processing program using GDAL in C.
>> > 
>> > I'm processing a raster of roughly 150 000 * 200 000 pixels in windows of
>> > 256 * 256 pixels.
> Is the TIFF tiled ? If it is not, this should help. And/or you could perhaps 
> try increasing GDAL_CACHEMAX too.
> But for a given organization (tiled vs non-tiled), I'm also surprised you 
> would get such a difference between read and write scenarios.
>
Could the compression mode of the TIFF have any impact here? What
compression mode are you using?