[MS4W-Users] MS4W 3.0 beta 7, fcgi and raster layer
jmckenna at gatewaygeomatics.com
Mon Dec 21 10:35:56 EST 2009
Comments inline below:
Rahkonen Jukka wrote:
> I had a try with fcgi which is advertised to give great speed
> I had a fresh MS4W 3.0 beta 7 installation, topped up with MS 5.6.0
> I followed the instructions and edited httpd.cong accordingly. This
> seemed to
> go right, because now my server is answering also for requests which I
> to \fcgi-bin.
excellent! I believe there might be a problem with the fastcgi module
on WindowsXP; if you have any comments on this please see the associated
However, I do not see much difference in behaviour.
> JMeter test
> with 10 and 20 concurrent users give similar output with both cgi and
> fcgi requests,
> about 5 images per second. Throughput is about 600 KB/sec. After reading
> I was awaiting about two times more speed for fcgi.
> Is there something more I should do, in addition to making fcgi module
> to load
> and commenting out the few lines from httpd.conf file?
If you followed the normal instructions then you shouldn't have to do
anything else. For the record Daniel Morissette gave a good explanation
on the MapServer-users list
That said, I would like to hopefully see the FOSS4G benchmarking
exercise performed on the Windows platform someday - maybe I'll have
more time this exercise to run it on my own Windows server for
comparison at least.
> I had only one raster layer in my test, and I added the line
> PROCESSING "CLOSE_CONNECTION=DEFER"
> to layer definitions. I am not sure if it is needed for raster layers
> which are read through tileindex. My tileindex shapefile has about 13000
> polygons so I guess it should gain from using fcgi. Images themselves
> processed in typical Mapserver way, they are uncompressed, tiled, and
Maybe change to a database layer, with Daniel's suggestions, and retry.
Thanks for your excellent feedback.
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