Contents

Title and Copyright Information

1 Performance Overview

Performance Terms

What is Performance Tuning?

Response Time

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

Using the mpstat Utility

Monitoring Network Traffic

Using the snoop Utility

Monitoring the Web Server

Using the mod_status Utility

Logging Server Statistics to a File

Monitoring JServ Processes

3 Sizing and Configuration

Sizing your Hardware and Resources

Understanding Concurrent Users and User Population

Determining CPU Requirements

Secure Sockets Layer Impact on CPU Requirements

Determining Memory Requirements

Memory for Non-HTTP Server Software and Operating System

HTTP Server Memory Requirements

JServ Memory Requirements

Determining Java Heap Size

Servlet and OracleJSP pages Memory Requirements

Number of JServ Processes

4 Optimizing HTTP Server Performance

TCP Tuning

MaxClients

SSL Session Caching

Impact of Logging

HTTP/1.1

Persistent Connections

Apache Versions

5 Optimizing Apache JServ

JServ Overview

Optimizing Servlet Performance

Loading Servlet Classes

Automatic Class Reloading

Load Balancing

Using Single Thread Model Servlets

What is OracleJSP?

OracleJSP Page Performance Tuning

Impact of Session Management

Developer Mode

Buffering

Enhancing OracleJSP Performance