You cannot use configure to change some kernel parameters
because they are not generally considered to need adjusting.
If you do need to alter such a parameter, log in as root
and use the
/etc/conf/bin/idtune resource value
resource is the name of the tunable parameter in uppercase as it appears in /etc/conf/cf.d/mtune (see mtune(F)). value is the parameter's new value. After changing the parameter values, relink the kernel, shut down and reboot the system as described in ``Relinking the kernel''.
You can use the -f option to idtune to force it to accept a value outside the range specified by the minimum and maximum values defined in mtune. If necessary, you can also use the -min and -max options to write new minimum and maximum values to the mtune file.
The following sections describe the parameters that can only be tuned using idtune: