Zen of Code Optimization

Zen of Code Optimization
Michael Abrash

From Amazon:

Provides unique coverage of Intel's Pentium chip. Explores hardware programming aspects that affect code performance. Features innovative optimization techniques not found in any other book. Includes the useful Zen timer-a hands-on software tool for measuring code performance. Presents creative "right-brain" Zen approaches to the art of writing PC

Goodreads reviews

Every week, for over a year, Alessandro asked his friends, colleagues, and acquaintances that are part of his social networks (Twitter and LinkedIn) the following question:

"What is the book that changed your life? (not novels or religious texts)"

I think it's a wonderful way to connect in a less superficial way and learn a little more about each other. It's also a wonderful way to discover new books worth reading.

This is one of them. The full list is here.