[mapserver-users] testing mapserver largefiles rendering improvements

[Paul Ramsey]

mapperf -m foo.map -x

-m is map file
-x executes fixes
default mode just reports issues

Things it would do/report:

- All shape files have up-to-date qix
- Replace "init:epsg" entries in PROJECTION blocks with their proj4
literals and fill in the appropriate ows_ metadata to make up for the
change
- Convert .jpg, .png to .tif
- Build overviews on .tif
- Internally tile .tif
- ...



On Thu, May 15, 2008 at 8:34 AM, Burgholzer,Robert
<rwburgholzer at deq.virginia.gov> wrote:
> If there is zero overhead to check for the existence of a ".qix" file
> and determine if it is up to date, I think this is a good default (no
> magic required).
>
> As for making it work out of the box for the typical user who is not
> interested in the nitty-gritty: Perhaps the "quick install" documents
> could say "Step X: Run the shptree on all your shape files".
>
>
>
> Robert W. Burgholzer
> Surface Water Modeler
> Office of Water Supply and Planning
> Virginia Department of Environmental Quality
> rwburgholzer at deq.virginia.gov
> 804-698-4405
> Open Source Modeling Tools:
> http://sourceforge.net/projects/npsource/
>
> -----Original Message-----
> From: mapserver-users-bounces at lists.osgeo.org
> [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Guillaume
> Sueur
> Sent: Thursday, May 15, 2008 11:24 AM
> To: Daniel Morissette
> Cc: Mapserver-users
> Subject: Re: [mapserver-users] testing mapserver largefiles rendering
> improvements
>
> I'm not sure that "standard" user uses often msDebug().
> My point was just to say that if somebody tries and tests MapServer,
> he/she will only read the basic documentation to have a working mapfile
> on a dataset. Once it works, no more reading will be done. And if a
> large shape is tested, the user can then be disappointed.
> The thing is that it's more than a specific tuning stuff, maybe more
> than a GIST index on a postGIS database.
> I think it should be mentionned at least in the Vector Data Access /
> shapefiles doc of the website. In addition to "Shapefiles are made up of
>
> a minimum of three similarly named files, with different suffixes..",
> one could write : "having a .qix file made with shptree improves
> considerabily the performances, mostly on large shapefiles"
>
> Beside this, I like the idea of building a MapFile Optimizer too...
> Daniel, what do you have in mind exactly ?
>
>
> --
> Guillaume
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