Installation guide

Unlike the command line methods of administering attributes,
dxkerneltuner provides immediate information on what subsystems are
loaded, and which attributes can be dynamically or only statically modified.
You can also see the current and permissible values for any modifiable
attribute.
When you invoke dxkerneltuner, a window is displayed listing all the
currently-loaded subsystems. For example:
envmon
lan_common
kds
vga
gpc_input
ws
pci
.
.
.
Selecting one of these subsystems by double-clicking on it will display all
the attributes for that subsystem in a table headed as follows:
• Attribute Name – The name of an attribute, such as
enable_extended_uids in the proc subsystem.
• Current Value – the value currently loaded for the listed attribute. If
this value appears in a modifiable data field, you can modify the
run-time value and apply it to the running kernel.
• Boot time Value – the value currently loaded for the listed attribute at
boot time. This value appears in a modifiable data field and you can
modify it for loading at the next boot.
• Minimum and Maximum – The lowest and highest values allowed for
the listed attribute.
In addition to manipulating the attributes directly using dxkerneltuner,
you can load and save attribute files. This provides a way of quickly
changing the configuration of a system. The File pull-down menu on the
dxkerneltuner main window provides the following options:
• Load into current – read in a file of attribute values for the subsystems
and apply them to the running kernel.
• Load into boot time – read in a file of attribute values for the
subsystems and apply them at the next boot.
• Save as current – Save the current attribute values for the subsystems
to a file.
• Save as boot time – Save the boot attribute values for the subsystems
to a file.
Configuring the Kernel 5–5