[mapserver-users] MapServer Performance

[Jan Hartmann]

Thomas P. Colson wrote:
> Do you have a link so we can see this mapserver app of yours? I'd like to see this fast refresh...what platform/build options are you using? 
> -----Original Message-----

I had the same experience of MapServer being faster than ArcView desktop 
in some cases. I think MapServer does some generalizing when rasterizing 
  vectors. ArcView always plots all lines, even if they transform to one 
and the same image pixel, while MapServer prunes them (I think). The 
effect is very noticeable when you zoomout far from detailed maps. Also, 
Steve put in some quad-tree wizardry I would like to know  more about.

Jan Hartmann
Department of Geography
University of Amsterdam
jhart@frw.uva.nl


> From: Lowther, David W [mailto:dlowther@ou.edu]
> Sent: Thursday, November 21, 2002 8:18 AM
> To: 'bwragg@mappingandbeyond.com'; mapserver-users@lists.gis.umn.edu
> Subject: RE: [mapserver-users] MapServer Performance
> 
> 
> Benjamin,
> 
> I have been using Mapserver for about 2-3 months now. Before that we used a
> CGI app written around MapObjects and at times we played with ArcIMS to
> compare performance. In my experience, Mapserver FAR FAR FAR outperforms
> ESRI products. The real shock for me was that I could load a layer of 55,000
> parcels into Arcview 3x, turn the layer on, THEN click refresh on my
> Mapserver page with those same parcels in the map and the Mapserver page
> returned well before Arcview finished drawing - consistently.
> 
> I don't know HOW Mapserver is so fast, but it is. So far performance has
> been equally as good with other vector layers as well as raster layers. All
> this, for free, platform independant.
> 
> I guess while I am on my grateful box I'll add that the support from this
> mailing list and the user community in general is outstanding.
> 
> HUGE thanks to all that make and support Mapserver,
> 
> Dave Lowther
> Geo Information Systems
> University of Oklahoma
> 
> -----Original Message-----
> From: Benjamin Wragg [mailto:bwragg@mappingandbeyond.com]
> Sent: Wednesday, November 20, 2002 9:59 PM
> To: mapserver-users@lists.gis.umn.edu
> Subject: [mapserver-users] MapServer Performance
> 
> 
> Hi Guys,
> 
> I'm just about to start playing with MapServer a bit, but I was just
> wondering how the performance is along side some of the other map
> servers like ArcIMS.
> 
> Thanks,
> 
> Benjamin Wragg
> 
>