[mapguide-trac] #983: Coordsys scalability and performance improvements

[MapGuide Open Source]

#983: Coordsys scalability and performance improvements
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   Reporter:  trevorwekel      |       Owner:  trevorwekel
       Type:  enhancement      |      Status:  new        
   Priority:  medium           |   Milestone:  2.1        
  Component:  Mapping Service  |     Version:  2.1.0      
   Severity:  minor            |    Keywords:             
External_id:  1220854          |  
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 !MapGuide exhibits lacklustre scalability on multi-cpu machines.  Portions
 of csmap's coordinate system transformation library are not thread safe.
 This submission reduces the scope of the existing coordsys transformation
 mutex and adds a batch processing optimization for linear geometies.

 During the course of profiling, the AGGRender !FindFont call also consumed
 significant time.  A straightforward optimization was implemented to
 retain the last font used so that it can be easily reused when rendering
 labels for multiple features on the same layer.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/983>
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