good resources/books on profiling software [closed]

A开发者_如何学运维s it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 11 years ago.

Can anyone suggest some good resources and/or books on profiling, importance of profiling, profiling techniques?

thanks

---

There is a book on how to use Valgrind, a GNU/Linux tool set that has a few profilers. If you wanted to learn about profiling, playing with Valgrind is a great "interactive" way to do it.