Preface

The Oracle Solaris Tunable Parameters Reference Manual provides reference information about Oracle Solaris OS kernel and network tunable parameters. This manual does not provide tunable parameter information about desktop systems or Java environments.

This manual contains information for both SPARC based and x86 based systems.

Note - This Oracle Solaris release supports systems that use the SPARC and x86 families of processor architectures. The supported systems appear in the Oracle Solaris Hardware Compatibility List at http://www.oracle.com/webfolder/technetwork/hcl/index.html. This document cites any implementation differences between the platform types.

In this document these x86 terms mean the following:

“x86” refers to the larger family of 64-bit and 32-bit x86 compatible products.
“x64” relates specifically to 64-bit x86 compatible CPUs.
“32-bit x86” points out specific 32-bit information about x86 based systems.

Who Should Use This Book

This book is intended for experienced Oracle Solaris system administrators who might need to change kernel tunable parameters in certain situations. For guidelines on changing Oracle Solaris tunable parameters, refer to Tuning an Oracle Solaris System.

How This Book Is Organized

The following table describes the chapters and appendixes in this book.

Chapter	Description
Chapter 1, Overview of Oracle Solaris System Tuning	An overview of tuning an Oracle Solaris system. Also provides a description of the format used in the book to describe the kernel tunables.
Chapter 2, Oracle Solaris Kernel Tunable Parameters	A description of Oracle Solaris kernel tunables such as kernel memory, file system, process size, and paging parameters.
Chapter 3, NFS Tunable Parameters	A description of NFS tunables such as caching symbolic links, dynamic retransmission, and RPC security parameters.
Chapter 4, Internet Protocol Suite Tunable Parameters	A description of TCP/IP tunables such as IP forwarding, source routing, and buffer-sizing parameters.
Chapter 5, Network Cache and Accelerator Tunable Parameters	A description of tunable parameters for the Network Cache and Accelerator (NCA).
Chapter 6, System Facility Parameters	A description of parameters used to set default values of certain system facilities. Changes are made by modifying files in the `/etc/default` directory.
Appendix A, Tunable Parameters Change History	A history of parameters that have changed or are now obsolete.
Appendix B, Revision History for This Manual	A history of this manual's revisions including the current Oracle Solaris release.

Other Resources for Oracle Solaris Tuning Information

This table describes other resources for Oracle Solaris tuning information.

Tuning Resource	For More Information
Online performance tuning information	http://www.solarisinternals.com/si/index.php
In-depth technical white papers	http://www.oracle.com/technetwork/server-storage/solaris/overview/index.html

Access to Oracle Support

Oracle customers have access to electronic support through My Oracle Support. For information, visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=info or visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=trs if you are hearing impaired.

Typographic Conventions

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

Table P-1 Typographic Conventions

Typeface	Description	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`	Placeholder: replace 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	Read Chapter 6 in the User's Guide. A cache is a copy that is stored locally. Do not save the file. Note: Some emphasized items appear bold online.

Shell Prompts in Command Examples

The following table shows the default UNIX system prompt and superuser prompt for shells that are included in the Oracle Solaris OS. Note that the default system prompt that is displayed in command examples varies, depending on the Oracle Solaris release.

Table P-2 Shell Prompts

Shell	Prompt
Bash shell, Korn shell, and Bourne shell	`$`
Bash shell, Korn shell, and Bourne shell for superuser	`#`
C shell	`machine_name%`
C shell for superuser	`machine_name#`

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