[ka-Map-users] Performance problems

Stephen Woodbridge woodbri at swoodbridge.com
Thu Mar 26 16:01:35 EST 2009


Have you rebuilt the shptree indexes?

find /path/to/data -name \*.shp -exec shptree {} \;

should do it on linux.

-Steve W

Jeff Dege wrote:
> 
> 
> We've a site running KaMap that has run with acceptable performance for 
> a number of years.  The shapefiles were recently upgraded, and now the 
> performance sucks.
> 
>  
> 
> Looking in the Apache logs, I'm seeing:
> 
>  
> 
>    msDrawMap(): Layer 9 (ADDRESS), 125.109s
> 
>    ...
> 
>    msDrawLabelCacheGD(): labelcache_map_edge_buffer  = -40
> 
>    msDrawMap(): Drawing Label Cache, 129.358s
> 
>  
> 
> If I'm counting correctly, Layer 9 is an annotation layer containing 
> street addresses that is drawn only at very tight zooms.
> 
>  
> 
> When I run shp2img, with the extents closed down so that the address 
> layer is drawn, I see:
> 
>  
> 
>   msDrawMap(): Layer 9  *ADDRESS), 0.532
> 
>    ...
> 
>    msDrawMap(): Drawing Label Cache, 0.547s
> 
>  
> 
> Any idea as to why drawing this layer would be so much slower, when done 
> by KaMap from Apache, than when done by shp2img from the command line?
> 
> 
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> 
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