[Mapserver-users] Mapserver and Apache performance

[J. Delfos]

What is the performance like with a tiny dataset? Are you sure that size
of your data, or even the Chameleon system, is your bottleneck? Could be
your client has a very slow pc, which has trouble processing so much
script. Try loading with tiny data. Or perhaps try rebuilding your
shapefile completely, while stripping attributes you don't need. Maybe the
shapefile was just not constructed efficiently. Are your files in the same
projection, or are you reprojecting a lot? 

Jacob

--- kallwn <kallwn at icircus.net> wrote:
> I'm using 5 shapefiles for each map. Almost all of them are points and
> under
> 100 KB and cover at the most 7 states in the US. Of the remaining 2 one
> is a
> shapefile of polygons of US urban areas about 5MB in size and the other
> is a
> file of lines about 9MB consisting of interstates and other limited
> access
> highways. I've created a quadtree index for each of them as suggested by
> Bart and that has improved loading time by about 3-4 seconds but I'm
> still
> getting complaints about  the load time. I've thought about reducing the
> size of the 2 large files so they would cover just the extents the maps
> are
> displaying but that turned out be easier said than done due the area
> each
> map cover.
> 
> 
> ----- Original Message ----- 
> From: "Ed McNierney" <ed at topozone.com>
> To: "kallwn" <kallwn at icircus.net>; <mapserver-users at lists.gis.umn.edu>
> Sent: Sunday, March 07, 2004 10:33 AM
> Subject: RE: [Mapserver-users] Mapserver and Apache performance
> 
> 
> You need to tell us a bit more about what it is you're doing that is
> slow.  For example, if you have an enormous shapefile and you're trying
> to draw the whole thing in one output map, that might take a while and
> produce an illegible map.
> 
> I don't think playing with Apache settings will do you any good unless
> you understand the problem; they're very likely to be irrelevant.
> 
> Please give us as much detail as you can about the nature, size, and
> number of the shapefiles you're using and the map image you're
> requesting.  Does the performance change as you zoom in or out?
> 
> - Ed
> 
> 
> 
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com
> -----Original Message-----
> From: kallwn [mailto:kallwn at icircus.net]
> Sent: Saturday, March 06, 2004 4:11 PM
> To: mapserver-users at lists.gis.umn.edu
> Subject: [Mapserver-users] Mapserver and Apache performance
> 
> I was given a project this week to have ready by Monday. To accomplish
> this I had to install Mapserver and PHP from scratch and since no one
> really had much experience using either one under IIS I went with the
> MS4W distribution from maptools.org. Well it is now up and running but
> as one person had described it as "dog slow". This running on a Micron
> server with 4 Xenon 500MHz processors and about 3GB of memory (along
> with MS SQL Server and VS.
> NET). It is using shape files for it layers with no databases access
> involved. I'm going to add some performance improvements to Apache such
> as changing the KeepAlive settings. However I'm not sure how well this
> will work. Does anyone have any suggestions?
> 
> 
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> 
> 
> 
> 
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