Re: [udig-devel] render performance

[Vince Darley <vince.darley@xxxxxxxxxxxx>]

My configuration is Windows XP on a Dell Latitude D800 laptop, 1 gig 
memory, 1.6ghz Pentium M, 1920x1200 display (built-in), with NVIDIA 
GeForce4 4200 Go (Dell Mobile) graphics card.  I'm running the standard 
installed uDig 1.0.0 with its standard memory allocation.

I just discovered that I had the processor setting to "max battery", and so 
I changed that to max performance, and that makes things about twice as 
fast.  However that still means on many zoom out operations I wait more 
than a second, and see the two shapefiles rendered progressively, with 
parts of the road net appearing substantially before other parts.

I should say these are delays measured by hand from when I click, e.g., the 
zoom button to when the map image has stopped changing (typically the 
rendering seems to happen in 3 or more stages).

> We rendered shapefile of hundreds of thousands of features on laptops
> also running postgis geoserver and mapserver at the same time and not
> had performance problems.

Reading this, I thought I'd move on to the next test, which is of the order 
of magnitude you quote.  This one takes 10 or more seconds to render...

   http://www.santafe.edu/~vince/pub/test-shp2.zip

(and after a few zooms in and out I run out of Java heap space, but that's 
a different issue)

cheers,

Vince.