[mapserver-users] MapServer performance question - slow on different machine

[Mark Volz]

Hello,



I had an old MapServer application running on a production machine.  It used IIS and it ran fast.  I upgraded the application on a development machine.  I switched over to Apache (for MapCache) and the new application ran fast on my development machine.  We moved the new application onto the production machine.  It does not run fast.



I am trying to figure out why MapServer 5 would run fast under  IIS, while MapServer 6 under Apache runs slow.  There are a couple possibilities, if anyone could confirm the following as a problem, or has a solution please let me know

*         The machine is now running both IIS on port 80, and Apache on port 8080.

o   I have a similar setup on another server, and this does not seem to be a problem at all.

*         The machine is using a 6.8 out of the available 8GB of RAM

o   I think we need more RAM on the system, however I am curious as to why the MapServer 5 application ran fast, while MapServer 6 is slow.  Could IIS just behave better than Apache under low RAM situations?

o   That being said both Apache and MapServer take a minimal amount of RAM



Machine Specs:

Developer Machine

*         MapServer 6.1 MS4W 3 Beta running Apache with MapCache

*         4 Core, 16 GB RAM



Production Machine

*         MapServer 6.1 MS4W 3 Beta running Apache with MapCache on port 8080

*         IIS is also on the machine on port 80

*         8 Core, 8 GB RAM

*         At one time IIS was running MapServer 5 at a reasonable speed



Thanks for any help or ideas



Mark Volz, GISP

GIS Specialist




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