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Today’s release of Visual Studio 2010 SP1 includes several performance and stability improvements for Entity Framework 4.0.  MSDN subscribers can download the service pack immediately, and the release will have general availability on Thursday, March 10. 

Here’s what new in SP1 for Entity Framework:



Performance Improvements for Large Models

The most notable improvement is performance in the designer (or at the command-line using EDMGen.exe) when working with large models.  In Visual Studio 2010, reverse-engineering a model from a medium to large database (>200 tables) would take an unnecessarily long time.  With SP1, a large model (for example, 500 tables) can now be reverse-engineered within seconds.

  

Bug Fixes for Self-Tracking Entities

BUG & Workaround: Using Entity Framework Self Tracking Entities with AppFabric CACHE (‘Velocity’) and .NET 4.0 RTM

Edmxes and HandleCascadeDelete

Self-Tracking Entity Template fails to generate code for function imports that don’t have a return value

Entity does not get marked as modified when FK association is nulled via EntityReference.EntityKey

Miscellaneous code-generation changes to conform to VB pretty-lister guidelines

Template generates uncompilable code for dot-separated namespaces

Template doesn’t generate default values for scalar properties on complex types