Contents

Title and Copyright Information

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Preface

Audience

Organization

Related Documentation

Conventions

1 Performance Overview

Performance Terms

What is Performance Tuning?

System Throughput

Wait Time

Critical Resources

Effects of Excessive Demand

Adjustments to Relieve Problems

Setting Performance Targets

Setting User Expectations

Evaluating Performance

Performance Methodology

Factors in Improving Performance

Architecture

2 Monitoring Your Web Server

Monitoring Processor Use

Using the sar Utility (AIX, HP-UX, Intel Solaris)

Using the top Utility

Monitoring the Web Server

Using the mod_status Utility to Monitor the Web Server

Logging Server Statistics to a File

Monitoring JServ Processes

3 Sizing and Configuration

Sizing your Hardware and Resources

Determining CPU Requirements

Secure Sockets Layer Impact on CPU Requirements

Determining Memory Requirements

Determining Memory Requirements for Operating System Software

Determining Memory Requirements for the Oracle HTTP Server

JServ Memory Requirements

Determining Java Heap Size

Determining Memory Requirements for Servlets and OracleJSP pages

Determining the Number of JServ Processes per CPU

4 Optimizing HTTP Server Performance

Tuning TCP Parameters

Linux Tunables

Configuring the MaxClients Parameter

Enabling SSL Session Caching

Understanding Performance Implications of Logging

Benefits of the HTTP/1.1 Protocol

Supporting Persistent Connections

Differences between Apache Releases with Respect to Performance

5 Optimizing Apache JServ

Overview of JServ

Optimizing Servlet Performance

Loading Servlet Classes

Reloading Servlet Classes Automatically

How to Perform Load Balancing

Using Single Thread Model Servlets

What is OracleJSP?

Tuning OracleJSP Pages for Performance

Impact of Session Management

Developer Mode

Buffering

OracleJSP Performance Tips

Index