Tunable Kernel Parameters
Table Of Contents
- Tunable Kernel Parameters
- Legal Notices
- Revision History
- Conventions
- 1 Overview
- 2 Accounting Subsystem
- 3 Asynchronous I/O Subsystem
- 4 File System Subsystem
- 5 Interprocess Communication (IPC) Subsystem
- 6 Kernel Crash Dump Subsystem
- 7 Memory Paging Subsystem
- 8 Process Management Subsystem
- 9 Spinlock Pool
- 10 Streams Subsystem
- 11 Miscellaneous Parameters
- Miscellaneous Parameter Summary
- CD-ROM Parameter Summary
- System Clock Parameter Summary
- Disk I/O Parameter Summary
- Intrusion Detection System/9000
- Fast Symbolic Link Traversal Parameter Summary
- Reserved System Memory Parameter Summary
- Network Parameter Summary
- Queued Signals Parameter Summary
- Real-Time Priority Parameter Summary
- Terminal Parameter Summary
- Maximum Users Parameter Summary
- Web Server Parameter Summary
- Miscellaneous Parameter Summary
- A Table of Tunable Kernel Parameters
Overview
Manpage Layout
Chapter 1
12
Manpage Layout
The tunable manpages described in this manual are available on HP-UX 11i Version 1.6
systems with the man command as well as on docs.hp.com and on Instant Information
and through the kcweb (1M) interface.
The manpages for tunable kernel parameters have a layout that is different from other
manpages. The special headings and subheadings are described below.
NAME This section contains the name or names of the tunable and a short
description. Some manpages describe more than one tunable. The
names are the names of the tunables as they appear in a kcweb (1M) or
kmtune (1M) display.
VALUES This section contains subsections that describe the values that can be
applied.
Default Value The value that is set on most systems when they are
shipped. For most tunables, there should be no need
to change the value from the default.
Allowed Values The range of values that can be used for the tunable.
Using a value that is outside the range specified can
produce unexpected results.
Fail-safe Value The value that is recommended for use when using
the system in maintenance mode. Set this value
when you are trying to recover from errors that have
been caused by erroneous tuning of the system. If you
set the tunable to this value, the system will boot at
least in single-user mode without trouble caused by
tunables set to improper values.
Recommended Values Recommended settings for the tunable.
DESCRIPTION This section describes what the tunable does and the information that
you need to set the value of the tunable in a manner that is customized
to the environment.
Under this section several questions that are relevant to the tunable
are answered. The questions include:
• Who Is Expected to Change This Tunable?
• Restrictions on Changing
• When Should the Value of This Tunable Be Raised?
• What are the Side Effects of Raising the Value?
• When Should the Value of This Tunable Be Lowered?
• What are the Side Effects of Lowering the Value?
• What Other Tunable Values Should Be Changed at the Same Time?