HP-UX 11i Version 2 Release Notes (October 2003)

General System Administration
HP-UX Kernel Configuration
Chapter 4
83
Obsolescence
Not applicable.
HP-UX Kernel Configuration
HP-UX Kernel Configuration is a combination of a command set and a Web-based
graphical user interface (GUI), kcweb, that allows the user to configure an HP-UX kernel
and to monitor consumption of kernel resources controlled by parameters.
The HP-UX Kernel Configuration application provides a set of commands for the
following:
• tuning the kernel
• loading and unloading kernel modules
•configuring alarms
The HP-UX Kernel Configuration tool (kcweb) can be launched from SCM and also from
the command-line. You can also launch kcweb as a separate tool from the SAM TUI
although it is no longer an integral part of SAM (as it was prior to HP-UX 11i v1.6).
HP-UX Kernel Configuration can also be set up to be launched automatically by a Web
browser. See the waconf (1M) manpage for more details.
Summary of Change
The kcweb application has incorporated the following changes and new features:
• Adds more information about a parameter's auto-tuning capability and value at last
boot
• Supports easy DLKM configuration
• Enables a user to view the history of change for a specific tunable, module or all
tunables, modules through the change log viewer.
The maxusers tunable has been obsoleted and removed in the HP-UX 11i v2 release.
Changes to this tunable will have no effect on the kernel. Prior to the HP-UX 11i v2
release, the maxusers tunable was used to calculate the default values of nclist, nfile,
and ninode, all of which control kernel data structures that determine the system
resource allocation.
As of HP-UX 11i v2, however, no tunables depend on maxusers. All tunables that used to
depend on it for default values have now been assigned individual numerical defaults.
Changing maxusers will have no affect on any other tunable. Individual tunables should
be changed for system tuning. Please refer to the respective tunable manpages for more
information.