About This Book

Tuning Enhancements for AIX 5.2

Performance Concepts

Resource Management Overview

Introduction to Multiprocessing

Planning and Implementing for Performance

System Monitoring and Initial Performance Diagnosis

Monitoring and Tuning CPU Use

Monitoring CPU Use

Using the time Command to Measure CPU Use

Identifying CPU-Intensive Programs

Using the tprof Program to Analyze Programs for CPU Use

Using the pprof Command to Measure CPU usage of Kernel Threads

Detecting Instruction Emulation with the emstat Tool

Detecting Alignment Exceptions with the alstat Tool

Restructuring Executable Programs with the fdpr Program

Controlling Contention for the CPU

CPU-Efficient User ID Administration (The mkpasswd Command)

Monitoring and Tuning Memory Use

File System, Logical Volume, and Disk I/O Performance

Monitoring and Tuning Communications I/O Use

Monitoring and Tuning NFS Use

Monitoring and Tuning Java

Analyzing Performance with the Trace Facility

Using Performance Diagnostic Tool (PDT)

Reporting Performance Problems

Application Tuning

Using POWER4-based Systems

Monitoring and Tuning Partitions

Appendix A. Monitoring and Tuning Commands and Subroutines

Appendix B. Efficient Use of the ld Command

Appendix C. Accessing the Processor Timer

Appendix D. Determining CPU Speed

Appendix E. National Language Support: Locale versus Speed

Appendix F. Summary of Tunable Parameters

Appendix G. Test Case Scenarios

Appendix H. Notices

Index