HP-UX 11i Version 1.6 Release Notes

HP-UX Features

HP-UX Kernel Configuration

Chapter 3

HP-UX Kernel Configuration

Kernel configuration is a combination of a command set and a Web-based graphical

user interface (GUI) that allows the user to configure an HP-UX kernel, and to monitor

consumption of kernel resources controlled by parameters.

Summary of Change

The kcweb application replaces the kernel configuration portion of SAM and adds three

commands for kernel configuration and monitoring to the system: kcweb (1M), kcusage

(1M), and kcalarm (1M) as well as the daemon kcmond (1M), which replaces the

obsoleted krmond (1M).

Details of Change

New features provided by kcweb:

• New Web-based GUI that is faster than the current SAM interface. The new GUI

interface is easier to use remotely and is now supported on personal computers (PC).

• View kernel parameter documentation within the GUI.

• Support for dynamic (no reboot) kernel tuning.

• Parameter monitoring - Continual monitoring of the usage of kernel resources

(through kcmond) can be turned on, allowing the kernel to be tuned proactively

rather than waiting for an application to fail. This monitoring can enable:

— Tables and graphs of kernel resources controlled by kernel parameters.

— User created threshold alarms can trigger notification when consumption of a

kernel resource exceeds a specified percentage of the parameter value.

• Improved command line interface (CLI). All functionality available in the GUI is also

available through the CLI commands.

• Improved separation between GUI and kernel; the application does not need to be

patched as often.

Impact

Less than 12MB of disk is necessary for kcweb, and minimal memory is required by CGIs

(approximately 20MB memory for HP Apache-based Web Server and Netscape).

The kcweb application automatically replaces the kernel configuration section of SAM.

In addition, the kcusage and kcalarm commands are added to provide numerous

improvements over previous approaches to kernel configuration. The kcmond command

replaces krmond in this release.

Compatibility

Not applicable.