[mapserver-users] It takes more than 2 minutes for my map server to generate a world map

[Steve Lime]

I may be missing something but it sounds like you're drawing all 4659 images which would take a long time. Sorta defeats the purpose of tiling. Perhaps you could create some derived images at a reduced resolution to use in these cases instead of hitting the tiles. You'd use multiple layers with min/max scale values to control what's used. -Steve

Sent from my iPad

On Jul 27, 2011, at 6:20 PM, jk <jk.chen at sdl.usu.edu> wrote:

> Hi,
> 
> I have a tile system of 4659 tiles, each is a 5 meter resolution raster
> image a particular spot in the world (as you know it is sparse, the
> collection of tiles do not cover the enter world). 
> 
> When I asking for a map of the world (ie, high-level view, a bbox with
> values close to the lonlat boundary of the world), my map server
> consistently takes long time to finish, (close to 2.5 minutes, yeah,
> minutes, not seconds). This is very slow. 
> 
> If I submit a bbox that matches a particular tile, the map is returned
> instantly. 
> 
> How could it take so long to generate the world map?
> 
> How to fix that?
> 
> Anything I'm missing? Any idea?
> 
> I'm not using tile cache yet. But I think 2.5 minutes for world view is way
> too slow. Something must be wrong. 
> 
> If you know of any clues, let me know. 
> 
> Thanks for your help.
> 
> JK 
> 
> 
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