loader.conf options

[wayne mitchell]

hey
am trying to configure my new system
(FreeBSD 8.1-RELEASE GENERIC amd64 - on an intel core 2 duo)
and find all possible settings to tweak
i can tell from documentation that there are many options possible with
/boot/loader.conf
as well as others
though i cannot find any definitive list
i am sure that this - in some cases - depends on how the rest of system is
configured
hardware bios, software bios, kernel ... and so on
i can never find the right value to set at the time that i want to set it
always seems to be in passing while looking up something else
am currently looking for values to tweak the kernel with,
though would rather rely on module loading and loader.config settings and
device.hints
have got:
/usr/src/sys/conf/NOTES
/usr/src/sys/amd64/conf/NOTES
man loader.conf
man device.hints
handbook
FAQ

am looking for:
memory/bus (tweaks for I/O speeds / caching ...)
attached hardware
multimedia/sound/video/midi