Reflection is used in the PersistenceModel to initialize the mapping classes. Currently we're using the ConstructorInfo.Activate function to create the mapping objects. Activator.CreateInstance is a bit more than twice as fast and is less code.
Unfortunately, there's a fair bit of work happening in the mapping constructors so we don't see such a dramatic improvement in initialization time. Benchmarking the change against actual mapping classes and the initialization time drops by a few percentage points depending on the complexity of class.
Benchmarking the construction time of the ProductMap class in the example project
| Method | Mean | Error | StdDev |
|------------------ |---------:|---------:|---------:|
| ConstructorInfo | 52.47 us | 1.042 us | 1.070 us |
| ActivatorInstance | 50.50 us | 0.628 us | 0.557 us |
Not a huge performance increase but it's an easy change to make.
Reflection is used in the
PersistenceModel
to initialize the mapping classes. Currently we're using theConstructorInfo.Activate
function to create the mapping objects. Activator.CreateInstance is a bit more than twice as fast and is less code.Unfortunately, there's a fair bit of work happening in the mapping constructors so we don't see such a dramatic improvement in initialization time. Benchmarking the change against actual mapping classes and the initialization time drops by a few percentage points depending on the complexity of class.
Benchmarking the construction time of the
ProductMap
class in the example projectNot a huge performance increase but it's an easy change to make.