Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Configuring a System
Reconfiguring the Kernel (HP-UX 11i Version 2)
Chapter 3334
Managing Kernel Tunable Parameters with kctune
The kctune command is used to query and change the values of kernel
tunable parameters (“tunables”), in the currently running configuration
or in a saved configuration. Tunables are variables that govern the
behavior of the HP-UX kernel. Tunables are used for a variety of
different tasks: some control resource allocations; others control security
policies; others enable optional kernel behavior; etc. There are 150-200
tunables in a typical kernel. Se the kctune (1M) manpage.
version version number of the module
state the current value of the module
cause reason on how the module got into its current state
next boot the state that the module will be changed to if you click the ok button
capabilities all the states that the module can support
dynamic indicates whether the module is a dynamically loadable kernel
module
dependencies all the modules on which this module depends
mode of change contains a set of radio buttons to apply kernel configuration changes
immediately or to hold kernel configuration changes till next boot.
This field is displayed only for dynamic modules. By default, the
change at next boot radio button is selected. If you do not select any
radio button, kernel configuration changes will be held till next boot.
reason for change editable text field to enter comments for change in module state
back up the
current
configuration
before applying
change
backup of current configuration before applying the change. By
default, this checkbox is selected.
Table 3-15 kcweb modify module state Fields (Continued)
Field Name Description