This is a short, practical, and occasionally funny book on how to solve application performance problems from someone that has been there and done that over the last 25 years.
It works for any application running on any collection of computers you have. It teaches you how to wisely use whatever meters you have and how to discover more about those meters than the documentation reveals. It helps with the human side of performance as you seek information and present your findings (good or bad) all the way up to the CIO level.
It provides practical advice on how to do, and the when to use, performance monitoring, capacity planning, load testing, and modeling.