Sun Java System Web Proxy Server 4.0.11 Performance Tuning, Sizing, and Scaling Guide

Preface

This guide discusses adjustments that you can make to improve the performance of Sun Java^TM System Web Proxy Server software (known as Proxy Server). The guide provides tuning, scaling, sizing tips and suggestions. It also provides possible solutions to common performance problems and data from scalability studies. It also addresses some of the configuration-specific and platform-specific issues.

Who Should Use This Book

This guide is intended for advanced administrators only. Be sure to read this guide and other relevant server documentation before making any changes.

Before You Read This Book

Proxy Server can be installed as a stand-alone product or as a component of Sun Java Enterprise System (Java ES), a software infrastructure that supports enterprise applications distributed across a network or Internet environment. If you are installing Proxy Server as a component of Java ES, you should be familiar with the system documentation at http://docs.sun.com/coll/1286.2.

How This Book Is Organized

This guide is divided into chapters. Each chapter addresses specific areas and tasks. The following table lists the chapters of the guide and their contents.

Table P–1 Guide Organization


Chapter	Description
Chapter 1, Performance and Monitoring Overview	This chapter provides a general discussion of server performance considerations, and more specific information about monitoring server performance.
Chapter 2, Tuning Sun Java System Web Proxy Server	This chapter describes specific adjustments you can make that might improve Sun Java System Web Proxy Server performance. It provides an overview of Proxy Server's connection-handling process so that you can better understand the tuning settings.
Chapter 3, Common Performance Problems	This chapter discusses common web site performance problems.
Chapter 4, Platform-Specific Issues and Tips	This chapter provides platform-specific tuning tips.
Chapter 5, Sizing and Scaling Your Server	This chapter examines the subsystems of your server, and provides recommendations for optimal performance.
Chapter 6, Scalability Studies	This chapter describes the results of scalability studies.

Proxy Server Documentation Set

The Proxy Server documentation set describes how to install and administer the Proxy Server. The documentation set lists the documents that are related to Proxy Server. The URL for Sun Java System Web Proxy Server 4.0.11 documentation is http://docs.sun.com/coll/1311.11. For an introduction to Proxy Server, refer to the books in the order in which they are listed in the following table.

Table P–2 Sun Java System Web Proxy Server Documentation


Document Title	Contents
Sun Java System Web Proxy Server 4.0.11 Release Notes	The Proxy Server release: Late-breaking information about the software and the documentation New features Supported platforms and environments System requirements Known issues and workarounds
Sun Java System Web Proxy Server 4.0.11 Installation and Migration Guide	Performing installation and migration tasks: Installing the Sun Java System Web Proxy Server Migrating from version 3.6 to version 4
Sun Java System Web Proxy Server 4.0.11 Administration Guide	Performing administration and management tasks: Using the administration and command-line interfaces Configuring server preferences Managing users and groups Monitoring and logging server activity Using certificates and public key cryptography to secure the server Controlling server access Proxying and routing URLs Caching Filtering content Using a reverse proxy Using SOCKS
Sun Java System Web Proxy Server 4.0.11 Configuration File Reference	Editing configuration files
Sun Java System Web Proxy Server 4.0.11 NSAPI Developer’s Guide	Creating custom Netscape Server Application Programmer's Interface (NSAPI) plugins
Sun Java System Web Proxy Server 4.0.11 Performance Tuning, Sizing, and Scaling Guide	Tuning Sun Java System Web Proxy Server to optimize performance

Related Books

The URL for all documentation about Sun Java Enterprise System (Java ES) and its components is http://docs.sun.com/prod/entsys.5.

Default Paths and File Names

The following table describes the default paths and file names that are used in this book.

Table P–3 Default Paths and File Names


Placeholder	Description
`install-dir`	Represents the base installation directory for Proxy Server
`instance-dir`	Directory that contains the instance-specific subdirectories

Typographic Conventions

The following table describes the typographic changes that are used in this book.

Table P–4 Typographic Conventions


Typeface	Meaning	Example
`AaBbCc123`	The names of commands, files, and directories, and onscreen computer output	Edit your `.login` file. Use `ls -a` to list all files. `machine_name% you have mail.`
`AaBbCc123`	What you type, contrasted with onscreen computer output	`machine_name%` `su` `Password:`
`AaBbCc123`	A placeholder to be replaced with a real name or value	The command to remove a file is `rm` `filename`.
AaBbCc123	Book titles, new terms, and terms to be emphasized (note that some emphasized items appear bold online)	Read Chapter 6 in the User's Guide. A cache is a copy that is stored locally. Do not save the file.

Symbol Conventions

The following table explains symbols that might be used in this book.

Table P–5 Symbol Conventions


Symbol	Description	Example	Meaning
`[ ]`	Contains optional arguments and command options.	`ls [-l]`	The `-l` option is not required.
`{ \| }`	Contains a set of choices for a required command option.	`-d {y\|n}`	The `-d` option requires that you use either the `y` argument or the `n` argument.
`${ }`	Indicates a variable reference.	`${com.sun.javaRoot}`	References the value of the `com.sun.javaRoot` variable.
-	Joins simultaneous multiple keystrokes.	Control-A	Press the Control key while you press the A key.
+	Joins consecutive multiple keystrokes.	Ctrl+A+N	Press the Control key, release it, and then press the subsequent keys.
->	Indicates menu item selection in a graphical user interface.	File -> New -> Templates	From the File menu, choose New. From the New submenu, choose Templates.

Documentation, Support, and Training

The Sun web site provides information about the following additional resources:

Searching Sun Product Documentation

Besides searching Sun product documentation from the docs.sun.com web site, you can use a search engine by typing the following syntax in the search field:

search-term site:docs.sun.com

For example, to search for “Proxy Server,” type the following:

Proxy Server site:docs.sun.com

To include other Sun web sites in your search (for example, java.sun.com, www.sun.com, and developers.sun.com), use “sun.com” in place of “docs.sun.com” in the search field.

Third-Party Web Site References

Third-party URLs are referenced in this document and provide additional, related information.

Note –

Sun is not responsible for the availability of third-party web sites mentioned in this document. Sun does not endorse and is not responsible or liable for any content, advertising, products, or other materials that are available on or through such sites or resources. Sun will not be responsible or liable for any actual or alleged damage or loss caused or alleged to be caused by or in connection with use of or reliance on any such content, goods, or services that are available on or through such sites or resources.

Sun Welcomes Your Comments

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