[Mapserver-dev] Performance loss between 3.5 and 4.2

Sean Gillies sgillies at frii.com
Fri Sep 24 12:25:03 EDT 2004

On Sep 24, 2004, at 8:59 AM, Daniel Morissette wrote:

> Eric Boudaillier wrote:
>> I have done a simple test with shp2img, which is basically what I 
>> need,
>> that shows the performance loss:
>> 762178 microseconds  home-made v4.2.3 statically linked
>> 854505 microseconds  v3.6.7 binaries
>> 848116 microseconds  v4.2 binaries
>> 378156 microseconds  v3.5 msworkbench dll (compiled with MinGW)
>> The shapefile represents USA and is 18Mo.
>> Could someone explain these differences ?
>> Could the compilation with MinGW give better result ?
>> Or is 3.5 just faster ? If so, is there some inconvenient to use this
>> version for my need ?
> Lots of stuff has been added between 3.5 and 4.2 and there is always a 
> chance that something could have lead to a performance loss, but we 
> are not aware of any issue. Actually there was one that was reported 
> back in the 3.6 days but it's been fixed in v3.6.1 and in this 
> specific case v3.6 was made faster than 3.5:
> http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=162

Until the mapserver project adopts some regularly run performance 
all evidence that mapserver is slower or faster than it used to be will 
only anecdotal.  Anyone interested?

(And here comes another damn automated reply from gijs.com -- can we 
that user from the list?  They are not a participant.)


Sean Gillies
sgillies at frii dot com

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