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

Accounting Subsystem
Specifying a Threshold Value
Chapter 2
19
minfree = 5
acctsuspend = 0
acctresume = 3
Suspend when file system is completely full, do not resume (resume when available
space reaches 105% of total file system which cannot happen):
minfree = 5
acctsuspend = -5 (minus 5)
acctresume = 100
How to Determine Value of minfree
acctsuspend and acctresume specify accounting thresholds based on the current value
of the minfree parameter for the file system where the accounting files reside. minfree
is specified when the file system is being created, and determines what percentage of the
total file system space is reserved and cannot be used by ordinary users. The value can
range from zero to 100.
The default value for minfree on HP-UX file systems is 10 percent. To determine the
current value of minfree, use the df command with the -t option (see df (1M)).
For example, to find the current value of minfree on the mounted file system /users,
use the command:
df -t /users
Additional Information
• “Overview of Accounting Parameters” on page 17
• “Accounting Parameter Summary” on page 16
• “How to Specify Configurable Parameter Values” on page 13