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

If you're serious about performance profiling then you might need to spend some money. I've spent a lot of time using Redgate's ANTS profiler and it has helped me find some very unusual aspects of my code that have caused performance problems.

Mike's suggested technique is good, and I've used that too, but if you really want to dig into the hot spots and how those hot spots were called then tools like dotTrace and ANTS are very good. Personally I prefer ANTS but dotTrace will do the job too.