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 and Tuning Memory Use

Determining How Much Memory Is Being Used

Finding Memory-Leaking Programs

Assessing Memory Requirements Through the rmss Command

Tuning VMM Memory Load Control with the schedtune Command

Tuning VMM Page Replacement with the vmtune Command

Tuning Paging-Space Thresholds

Choosing a Page Space Allocation Method

Using Shared Memory

Using AIX Memory Affinity Support

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