ASP.NET MVC Application performance profiling

Question

How are people currently profiling the performance of their ASP.NET MVC applications?

I\'d be most interested in simple and free approaches.

Answer 1

Can you use this technique? It's free and it works with any language or platform. It precisely locates points to optimize, though as a measurement method it is imprecise. It is low-tech, but here's discussion of why it works.