[gdal-dev] tileindex performance

[Frank Warmerdam]

nickos85 wrote:
> Hi,
> 
> I have a mapserver and a high resolution image about 4GB when i make the
> image tiles with a size of 512x512 using gdal_retile I have better result
> instead of a tile size of 256x256. I think the problem is on how the search
> algorithm for the location of the tile can be improoved. Any suggestions?

Nikos,

Did you spatially index your tile index?  The tileindex should be spatially
indexed with shptree.

What sorts of map requests are you making?  Are they made at near full
resolution or are they overviews?

I'm generally not a fan of tiling with gdal_retile, and prefer to make one,
or a few, large files internally tiled with overviews.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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