HP-UX System Administrator's Guide: Configuration Management

Table 10-6 Modify Kernel Tunable Fields (continued)
DescriptionField Name
The current value of the tunable.Current Value
Displays whether the tunable is Static, Dynamic, or Auto.
Tuning Capability
The percentage of the resource that is being used.Current Usage
The dependencies that a tunable might have on other tunables and its
value restrictions
Constraints
3. The Modify Kernel Tunable page also displays the areas that you can change, as
shown in Table 10-7. The areas displayed depend on the capabilities of the tunable.
Enter your changes.
Table 10-7 Modify Kernel Tunable Change Options
DescriptionField Name
Enter a formula (or integer) describing the new value. You can set it to
the default by clicking the Reset to Default button.
New Setting
(Expression/Value)
The calculated value of the new setting. You may have to click the
Recalculate Value button.
New Setting
(Evaluated)
Select either change immediately or change at next boot. The default
is change at next boot. This field only appears for dynamic tunables.
Other tunables always change at next boot.
Mode of Change
Check whether to back up the current configuration before applying the
change. By default, this check box is selected.
Backup
Enter comments about the change in the tunable value.Reason for Change
4. (Optional) To see the command that will execute the changes, click the Preview
button.
5. After you have entered your changes, click the Modify button to execute them. Or
click the Cancel button to discard your changes.
Monitoring Kernel Resource Usage
Some tunable parameters represent kernel resources whose usage can be monitored.
For these tunables, you can set alarms to notify you when the usage of the corresponding
kernel resource crosses a threshold you specify.
The alarms page allows you to:
• Create and remove alarms
• Activate and deactivate alarms
180 Configuring the Kernel