Good content and the overall principles. Easily applicable and has a good guide on getting started.
On the downside, I thought the book was:
- targeted at people that read Analyzing Computer System Performance with Perl::PDQ
- had somewhat of a high amount of "filler" content
- went in depth explaining some concepts of queuing theory from zero, but used and didn't explain other concepts at all.
I'll probably going to re-read certain parts later.