To solve performance problems in modern computing infrastructures, often comprising thousands of servers running hundreds of applications, spanning multiple tiers, you need tools that go beyond mere reporting. You need tools that enable performance analysis of application workflow across the entire enterprise. That's what PDQ (Pretty Damn Quick) provides. PDQ is an open-source performance analyzer based on the paradigm of queues. Queues are ubiquitous in every computing environment as buffers, and since any application architecture can be represented as a circuit of queueing delays, PDQ is...

Makes performance analysis and queueing theory concepts simple to understand and available to anyone with a background in high school algebra

Presents the practical application of these concepts in the context of modern, distributed, computer system designs

Packed with helpful examples that are based on the author's experience analyzing the performance of large-scale systems over the past 20 years.