Accelerating AIX: Performance Tuning for Programmers and Systems Administrators

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9780201633825: Accelerating AIX: Performance Tuning for Programmers and Systems Administrators

As an AIX system administrator or programmer, you know that performance tuning is critical to ensuring that your operating system meets the demands placed on today's computer systems and LAN operations. However, the methods of tuning have often been difficult to divine without expert assistance. In Accelerating AIX, Rudy Chukran shares AIX know-how, experience, and insight gained from spending more than ten years as one of IBM's tuning experts. This comprehensive book provides key information for both system administrators and application programmers, with: full coverage of monitoring, diagnostic, and development tools; remedies for performance slowdowns; techniques for relieving LAN bottlenecks; and proven methodologies for isolating, analyzing, and solving performance problems.

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About the Author:

Rudy Chukran has been working with AIX since its creation in 1983. Currently, he works for IBM as a technical consultant advising customers using the AIX system platform. His advice covers all aspects of troubleshootingaefrom solving compiler problems to analyzing system performance problems. In addition, he has presented numerous professional seminars on AIX performance. Some of the companies that have taken advantage of his expertise are Oracle, Informix, Sybase, SDRC, Dow Jones, Halliburton, and Computervision.



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Excerpt. © Reprinted by permission. All rights reserved.:

This book is intended for computer professionals who need to understand and control the factors that affect performance of their AIX compatible system. I learned the techniques and system background as a result of helping customers solve performance problems on their own systems for their own environments. The material in this book is an outgrowth of AIX performance-tuning seminars presented at conferences and customer sites. You will likewise learn methods of performance problem solving: which commands are easiest, which are most informative, which data is important and which is not, when you should stop tuning, and when you don't have sufficient data even to tackle the problem.

Who Should Buy This Book?

This is an intermediate book on AIX performance analysis for system administrators and programmers. AIX is a UNIX derivative. Previous experience with UNIX tasks such as editing files, manipulating files and directories, and shell programming is assumed. System administrators will find Chapters 1, 2, 3, 4, 5, and 8 most useful. Programmers will find Chapters 1, 2, 3, 6, 7, and 8 most useful. If you already have a firm basis in UNIX performance analysis, you can easily skip Chapter 1. Except for reading the material in Chapter 3, you can skip chapters and jump right to the topics that interest you.

Chapter Summaries

Chapter 1 is a basic overview of the concepts of performance analysis. This chapter discusses a general methodology that applies to any computer system.

Chapter 2 is a brief tutorial of the design of the AIX operating system. Design concepts such as virtual memory management, filesystems, and scheduling are covered. Emphasis is on the parts of the AIX design that offer some degree of tuning.

Chapter 3 covers the more rudimentary performance monitoring tools and techniques that perform the most crucial part of performance problem isolation. These tools allow you to determine whether it's the system or the application program that needs tuning. Both programmers and administrators can benefit from Chapter 3.

Chapter 4 covers remedies involving CPU, disk I/O, and memory bottlenecks. The emphasis in this chapter is on remedies that a system administrator would make to the system configuration, such as disk configurations and virtual memory settings.

Chapter 5 covers remedies involving local area networking bottlenecks. The emphasis is on network settings for TCP/IP and NFS that a system administrator would perform.

Chapter 6 covers performance tools that apply primarily to application program tuning. Programming tools such as compilers, linkers, and profilers are discussed. The emphasis is on compiler flags and techniques for implementing shared libraries.

Chapter 7 covers AIX system call programming. The emphasis in this chapter is on programming interfaces for interprocess communications and shared memory.

Chapter 8 is a summary of the entire book. This is the chapter in which the commands and techniques are reviewed for applicability. This is the "what do I use when" chapter.

Which Systems Are Covered?

AIX runs on several hardware platforms. IBM sells the RS/6000 line of products that use the PowerPC chip in their systems; Motorola sells the Power Stack line of systems; Bull sells Escala and Estrella; and Apple sells Network Server. All of these require the AIX version 4.1 or AIX Version 4.2 operating system. The techniques in this book apply to all of these systems and to both versions of AIX.

At the time of writing, AIX 4.2.1 was the most current version of the operating system. The material in this book works on AIX 4.1 and AIX 4.2 system levels as well.

AIX Version 3.2 is not specifically covered in this book; however, a great many of the techniques covered in this book also apply to AIX 3.2. Since AIX 3.2 is no longer serviced or sold, obtaining performance software for these systems is difficult, and the percentage of systems running AIX 3.2 should diminish to obscurity by the time you read this book.

Acknowledgments

Thanks to the reviewers of early drafts: Matt Accapadi, IBM; C. Schauble; Wayne Huang; Lee Cheng; Robert Boyce, American Express, TRS; James W. DeRoest, Computing & Communications, University of Washington; Jim Fox, University of Washington; and Bill Mansfield, CIBER. Also thanks go to Dave Robertson, my immediate manager at IBM, who gave me permission to use IBM equipment to test programs and generate figures.

Special thanks go to my wife, Bobbi, an experienced author herself, who was the major source of inspiration for creating this book. She offered invaluable advice on how to cure writer's block when I was stuck on Chapter 1. Her insistent reminders of "Don't you have a book to write?" when I wasn't actually writing kept me chugging down the track to the first draft. And she often did the dishes out of turn so that I could work on the book.



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Descripción Pearson Education (US), United States, 1998. Paperback. Estado de conservación: New. Language: English . Brand New Book ***** Print on Demand *****.Reengineering and Total Quality Management promised dramatic improvements in profit, efficiency, and quality, but a number of TQM initiatives ended in failure as a result of an incorrect or incomplete implementation process. Here is a book that will help put the odds on your side by giving you specific skills and experience-based advice for successfully planning and implementing process design.Comprehensive in scope, this book integrates the three major approaches to process redesign -- benchmarking, continuous improvement, and reengineering -- showing how to combine them for maximum effectiveness. It explains the circumstances for which each approach is appropriate and describes how to apply each specific technique effectively. The book also points out the many potential pitfalls that can impede even the most well thought out program.You will find detailed and methodical coverage of such topics as defining processes, measuring performance, reducing cycle times, team building, benchmarking, the critical success factors for reengineering, and much more. Numerous examples from many different industries demonstrate concepts and techniques in action, illustrate common mistakes, and provide a model for successful implementation that you can apply to your own organization.The information is presented in an accessible format, with guidelines, checklists, worksheets, discussion questions, and clear graphics to help you absorb essential information quickly and apply it successfully. Nº de ref. de la librería AAV9780201633825

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