Analyzing Computer System Performance with Perl::PDQ / Edition 1

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Overview

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 a natural fit for analyzing system performance.

Building on the success of the first edition, this considerably expanded second edition now comprises four parts. Part I contains the foundational concepts, as well as a new first chapter that explains the central role of queues in successful performance analysis. Part II provides the basics of queueing theory in a highly intelligible style for the non-mathematician; little more than high-school algebra being required. Part III presents many practical examples of how PDQ can be applied. The PDQ manual has been relegated to an appendix in Part IV, along with solutions to the exercises contained in each chapter.

Throughout, the Perl code listings have been newly formatted to improve readability. The PDQ code and updates to the PDQ manual are available from the author's web site at www.perfdynamics.com

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Editorial Reviews

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"The literature of computer performance analysis is generally composed of two groups: heavy theoretical treatises and performance cookbooks. […] Surprisingly, this book is exceptionally well balanced between theory and practice […] . I strongly recommend this book, both for the novice practitioner and for the experienced performance analyst. Both can extract a vast array of benefits, ranging from understanding the theoretical concepts of performance modeling, to building for themselves a powerful modeling tool […] ." Jair Merlo, Computing Reviews, May 2005

From the reviews of the second edition:

“Besides its case studies on applying queueing theory to the analysis of computer performance, this book on queueing circuits also includes a quick user guide to Perl Pretty Damn Quick (PDQ), a reference manual, and numerous examples. … The book is written to be a field manual for enlightened practitioners of performance analysis, or possibly a school textbook. … It is a laudable achievement to make performance analysis theoretical foundations available to anyone who is interested and can master high-school algebra.” (A. Squassabia, ACM Computing Reviews, December, 2011)

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Product Details

  • ISBN-13: 9783540208655
  • Publisher: Springer-Verlag New York, LLC
  • Publication date: 6/28/2005
  • Edition description: New Edition
  • Edition number: 1
  • Pages: 459
  • Product dimensions: 1.00 (w) x 9.21 (h) x 6.14 (d)

Meet the Author

Neil Gunther, M.Sc., Ph.D. is an internationally recognized computer performance researcher who founded Performance Dynamics Company (www.perfdynamics.com) in 1994, after having held both university teaching positions and management positions at Xerox PARC and Pyramid-Siemens Technology. In 2008 Dr. Gunther received the prestigious A.A. Michelson Award from CMG. In 2009, he was elected Senior Member of both the ACM and IEEE. Read more about him at en.wikipedia.org/wiki/Neil_J._Gunther.

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Table of Contents

Part I System Theory: Time - The Zeroth Performance Metric; Getting the Jump on Queueing; Queueing Systems for Computer Systems; Linux Load Average - Take a Load Off!; Performance Bounds and Log Jams.- Part II System Practice: Pretty Damn Quick: A Slow Introduction; Analyzing Multicomputer Architectures; How to Measure an Elephant with PDQ; Analyzing Client/Server Applications; Analyzing Web Applications with PDQ.- Part III Appendices: Glossary of Terms; A Short History of Buffers; Thanks for the (Lack of) Memories; Performance Metrics and Tools; List of Programs; Compendium of Queueing Equations; Solutions to Selected Exercises.- References.- Index.

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