[Mapserver-users] Slow MapServer with large data

[jankarin at post1.dknet.dk]

Hello

I have a little problem with the speed in MapServer. 
We're trying to make qiuck-viewer to shape- and tab-formats, but  MapServer is running slow with large data:
20 seconds: Shapefil 17 MB, dbf-fil 9,5 MB.
45 seconds: Map-fil 31 MB, Dat-fil 25 MB.

I have been trying with the GCI-version and PHP Mapscript - same result.

I am running MapServer 3.6.4 with PNG-output under Apache 2.4.5 on Windows 2000.
The pc is Pentim III, 650 Mhz, 262 MB RAM.

In another installation (PII, 400 Mhz, 196 MB RAM) a shapefile (shapefile 17 MB, dbf-fil 9,5 MB) took 80 seconds to show.

We're using MapServer in an application which is dynamically creating map-files with Mapscript (only showing one layer at a time). We're talknig about 17.000 layers in shape- and tabformats, so it is not possible to improve indexfiles or anything else related to a single layer.

Can anyone help?

Thanks,

Jan Christiansen
jankarin at post1.dknet.dk
Engineering College of Copenhagen