I'm sorry to say that this is not a good book on Performance... The organisation is horrid, the examples are terrible - I hope I don't get downvoted for my opinion.
Negative opinions go over much better when your argument can convince others with more than saying something sucks. Detailed reasoning and experience etc. It also helps to not mention votes.
Yes, however, the interest on this subject is minimal, so I won't bother anybody with my analysis. I bought this book and I sent it back right away, unfortunately.