[mapguide-trac] #627: MgAgfReaderWriter or MgWktReaderWrite performs horrendously on large Polygons

[MapGuide Open Source]

#627: MgAgfReaderWriter or MgWktReaderWrite performs horrendously on large
Polygons
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   Reporter:  stevedang  |       Owner:  stevedang
       Type:  defect     |      Status:  new      
   Priority:  high       |   Milestone:  2.1      
  Component:  Web API    |     Version:  2.0.1    
   Severity:  major      |    Keywords:           
External_id:  934833     |  
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 Attempts to process the large polygons result in the the Web Tier
 consuming 97% of the cpu process when trying to read the polygon either in
 SDF format using an MgAgfReaderWriter object or in WKT format using an
 MgWktReaderWriter object. The largest polygon appears to process for more
 than an hour or an hour and a half. The process has never been left to run
 to completion as the API testharness calling the script always times out
 before the execution of the script completes.

 The ReaderWriters appear to process fine on small polygons, but the
 performance is unacceptable on the large ones.

 Note the priority on this is high because of the usability/performance
 aspect of the defect. Technically the server does not crash during the
 operation, but if something like this is executed first then the MapGuide
 Web Tier may drop requests and become unusable for clients.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/627>
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