[Mapguide-trac] [mapguide-trac] #2099: mg-desktop: Reduce excessive disk IO

[MapGuide Open Source]

#2099: mg-desktop: Reduce excessive disk IO
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   Reporter:  jng          |       Owner:  jng
       Type:  defect       |      Status:  new
   Priority:  low          |   Milestone:  2.4
  Component:  Desktop API  |     Version:     
   Severity:  minor        |    Keywords:     
External_id:               |  
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 If you look at any process using mg-desktop in the Task Manager, chances
 are the "I/O Read Bytes" column will be through the roof.

 The explanation is simple, the mg-desktop implementation of
 MgResourceService is a simple wrapper around the file system, so every
 GetResourceContent() call (and Maestro does a lot of this) is a call to
 read a file from disk. Such calls add up real quick.

 The solution would be to have an in-memory cache of resource content, such
 that subsequent calls to GetResourceContent() on the same resource id
 returns a MgByteReader from a cached copy of the resource content.
 Subsequently, calls to SetResource() will flush existing entries out and
 update the cached entry.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/2099>
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