HP-UX Reference (11i v2 03/08) - 1M System Administration Commands A-M (vol 3)

k
kctune(1M) kctune(1M)
See kconfig(5) for details.
The fields supported in a
kctune request are:
name The name of the tunable.
module The name of the module supplying the tunable, if any; otherwise, this field will be
omitted from the output.
desc A short description of the tunable.
defvalue The default value of the tunable.
bootvalue The value of the tunable at the time the system last booted.
current The current value of the tunable. If the value was specified using an expression,
this field contains the result of evaluating that expression. If the tunable is being
automatically tuned, this field contains the value the kernel is currently using.
next_boot The value that will be used for the tunable at next boot. If the value was specified
using an expression, this field contains the result of evaluating that expression.
This field is present only if
-c is not specified.
before The value that was in use for the tunable before the change that was just made. If
the value was specified using an expression, this field contains the result of evaluat-
ing that expression. This field is present only for tunables for which an immediate
value change has been made during the current invocation of kctune.
expr The expression used to set the value of the tunable, if any. If the tunable is set to
default, this field contains the word Default.
next_expr The expression for the tunable’s value at next boot, if any. If the tunable is set to
default, this field contains the word Default.If-c is specified, this field is omit-
ted from the output.
before_expr The expression for the tunable’s value before the change that was just made, if any.
If the tunable was set to default, this field contains the word Default. This field
is present only for tunables for which an immediate value change has been made
during the current invocation of kctune.
min The minimum value of the tunable. This is an absolute minimum; the currently
running system may not be able to support values this low. If there is no minimum
value, this field will be omitted from the output.
max The maximum value of the tunable. This is an absolute maximum; the currently
running system may not be able to support values this high. If there is no max-
imum value, this field will be omitted from the output.
dynamic This field contains a ’y’ if the tunable can be changed without a reboot, or an ’n’ oth-
erwise.
canauto This field contains a ’y’ if the tunable is capable of being automatically tuned, or an
’n’ otherwise.
default This field contains a ’y’ if the tunable is set to its default value, or an ’n’ otherwise.
If both default and canauto are ’y’, the tunable is being automatically tuned.
next_default This field contains a ’y’ if the tunable is set to its default value at next boot, or an ’n’
otherwise. This field is omitted from the output if -c is specified.
before_default This field contains a ’y’ if the tunable was set to its default value before this invoca-
tion of kctune, or an ’n’ otherwise. This field is present only for tunables for which
an immediate value change has been made during the current invocation of
kctune.
signed This field contains a ’y’ if the tunable values should be treated as signed integers, or
an ’n’ otherwise.
flags This field contains a hexadecimal representation of the bitmask containing the
dynamic, canauto, default, and signed flags, among others. See
/usr/include/sys/dyntune.h for definitions of flag values. Additional flag
values may be defined in future releases or patches.
HP-UX 11i Version 2: August 2003 − 3 − Hewlett-Packard Company Section 1M−−349