There are a number of inversion of control containers out there so I thought it would be an interesting experiment to do a simple benchmark. There are different ways that one can instantiate a type in .NET, for example via the new operator, Activator, GetUninitializedObject and Dynamic Method. The performance difference between these methods are in some cases quite high, maybe the same is true for these IoC containers? Granted IoC containers do more than just create objects so other factors will probably play a big role in the results.

The scenario for this test:

• Have each IoC container resolve a UserController 1000 000 times
• The UserController will have two constructor dependencies
• Run the test with transient (new instance for each resolve) and singleton components