.NET was always fast. I remember in the .NET framework 2.0 days, .NET's JIT for derived from the Microsoft C++ compiler, with some of the more expensive optimizations (like loop hoisting) removed and general optimization effort pared back.
But If you knew what you were doing, for certain kinds of math heavy code, and aggressive use of low level features (like raw pointers) you could get within 10% of C++ code, with the general case being that garden variety non super optimized code being half as fast as equivalent C++ code.
I think this ratio has remained pretty consistent over the years.
But If you knew what you were doing, for certain kinds of math heavy code, and aggressive use of low level features (like raw pointers) you could get within 10% of C++ code, with the general case being that garden variety non super optimized code being half as fast as equivalent C++ code.
I think this ratio has remained pretty consistent over the years.