[ka-Map-users] KaMap performance tuning

Christopher Schmidt crschmidt at crschmidt.net
Tue May 22 10:35:40 EDT 2007

On Mon, May 21, 2007 at 02:25:24PM -0500, Jeff Dege wrote:
> So now the question:  If the image creation is so much faster, when
> accessed through shp2img, and when accessed through mapserver.exe, why
> is that speed improvement not visible when loading tiles through kamap's
> tile.php?

I think that all signs point to this being the result of metatiling.
Every tile you request from tile.php is actually rendering 25 times as
much data -- the benefit being that you only have to render these
metatiles once, and the five tiles in each direction that it covers
won't need a re-rendering.   

Christopher Schmidt
Web Developer

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