[Geomoose-users] [Geomoose-developers] Speed

[Jim Klassen]

Avoid the problem: 
* Use maxscaledenom in mapserver. Also, potentially create a generalized version of the dataset for use while zoomed out and add that layer with a minscaledenom to mapserver.
* Avoid labeling while zoomed out.

Help mapserver work for you by better organizing the data:
* If you are re-projecting data on the fly... don't (instead re-project the shape file(s) mapserver sees.)

* Make sure all .shp files have a .qix file next to them.
* Use shp2tile to create a tileindex of the parcel data. This will take some experimentation.

* Minimize the number of layers in favor of more classes (if possible)

* Potentially use a spatial database as the datasource with a proper spatial index instead of shp. (My experience is SHP is still about 20% faster than PostGIS)

I've seen a 10x speedup with the middle two methods.


>>> Dan Little <danlittle at yahoo.com> 08/08/08 9:15 AM >>>
Jay,

Adding one layer will not slow down GeoMOOSE, with a parcel layer, I'd imagine it's actually your entire box that is slowing down.   Parcels are typically the most dense and detailed layers that municipalities have -- they're also the most computationally intensive.  This is more than most likely an example of too much data on too little hardware.  I'd imagine even the aerial + parcel layer would lead to a slow down in performance.



----- Original Message ----
From: Jay Kapalczynski <jkapalczynski at ci.maple-grove.mn.us>
To: geomoose-users at lists.sourceforge.net; geomoose-developers at lists.sourceforge.net
Sent: Friday, August 8, 2008 9:04:24 AM
Subject: [Geomoose-users] Speed

 
I know we brushed on this briefly at our last meeting but
what is being done to increase performance in the 1.6 version of GeoMoose
 
I am currently using 1.2, running on my local box…I am
connecting to Aerial in a wms service, have a few layers open and it runs
alright. But still a bit sluggish
I turn on my parcels (36 sq miles) and it destroys the
speed.  It takes forever to pan and move around.
 
What are my options to get this to run with some snap….any
thoughts…..
 
THanks