[Mapserver-users] Mapserver/ArcIMS: server requirements

[Justin Garre]

We are looking at constructing a real-time traffic flow map using either 
ArcIMS or Mapserver.  Shapefiles would consist of simple boundary files in 
addition to street nodes defined by (x,y) coordinates.  The traffic data 
would be placed automatically into a database that ArcIMS/Mapserver would 
draw from in real-time (ie when the user would access the web page).  The 
scale of the area would be a large metropolitan area and the map user would 
be able to zoom to different parts of the highway system.

I expect this is a fairly standard web-based real-time traffic mapping 
system.  Hypothetically speaking, what would the requirements be in terms of 
server hardware should the number of hits be in the neighborhood of 200,000 
per day?  We are trying to estimate what our server costs will be prior to 
attacking such a project so any input would be helpful.

For those of you who are currently running Mapserver off of a dedicated 
server, how many map users do you get on a daily basis and what hardware 
infrastructure do you use to satisfy your map's demand?



>From: "Ed McNierney" <ed@topozone.com>
>To: "Justin Garre" 
><garre_gis@hotmail.com>,<mapserver-users@lists.gis.umn.edu>
>Subject: RE: [Mapserver-users] Mapserver/ArcIMS: server requirements
>Date: Fri, 2 May 2003 08:19:05 -0400
>
>Justin -
>
>Unfortunately, these are extremely difficult questions to answer, mainly 
>because there's a huge range in what constitutes a "hit".  Is one map 
>served a single tax parcel from a town-wide collection of 3,000 generally 
>simple polygons, or is one map served a resampled and reprojected subset of 
>a raster mosaic producing a zoomed-out view of several megabytes of 
>imagery?
>
>If you want to evaluate server requirements, you will need to describe the 
>serving job as precisely as possible.  If you can pretty well define what a 
>single map "hit" constitutes, you'll get more helpful advice.
>
>	- Ed
>
>Ed McNierney
>President and Chief Mapmaker
>TopoZone.com / Maps a la carte, Inc.
>73 Princeton Street, Suite 305
>North Chelmsford, MA  01863
>ed@topozone.com
>(978) 251-4242
>
>-----Original Message-----
>From: Justin Garre [mailto:garre_gis@hotmail.com]
>Sent: Friday, May 02, 2003 3:09 AM
>To: mapserver-users@lists.gis.umn.edu
>Subject: [Mapserver-users] Mapserver/ArcIMS: server requirements
>
>
>I am trying to get an idea of how many servers/server space will be 
>required
>to run Mapserver with a specific number of hits per day.  For example, 
>would
>a single server be adequate for 200,00 user sessions per day?  How many
>servers would be necessary for 1,000,000 users (site hits) per day?
>
>Granted this questions depends on a variety of criteria such as the
>capabilities of the hardware and how large the map files are, but if 
>anybody
>would be willing to share what kind of server setup you have and how much
>usage you experience on a daily basis it would be greatly appreciated.
>
>Also, would ArcIMS be more demanding than Mapserver in terms of server
>consumption?  ie- I understand Mapserver has a more concise code so I am
>curious to know if it would be less demanding on our server(s).
>
>Thanks in advance,
>
>Justin Garre
>University of Washington
>garre_gis@hotmail.com
>
>
>
>
>
>
>
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