http://sites.google.com/site/easylinuxt ... o-high:-Ub
That's what I used when first dicovering there was such a thing as swappiness in linux. Only talking about the stuff on that page related to changing your swappiness. Didn't try the other hacks the guy mentions. So as with everything ... Use at your own risk/discretion etc.
(afterthought edit) Changing swappiness value is just one of a ton of tweaks I used on Mint 10. Not sure if by itself it'll make an OS blaze. Really doubt it, but did it on the assumption that every lil bit can help boost performance for someone. Does make sense that if your OS is swapping and writing to disk when there's plenty of RAM still available it would slow things down some. I mean disk writes and CPU cycles would likely add up. So yeah ... I'd say there are benefits to it. Just don't expect it to be a night and day difference, shrugs. Jmo on it.
You can temporarily change the swappiness with terminal command "echo 10 > /proc/sys/vm/swappiness" if ya like. Run that command then
"cat /proc/sys/vm/swappiness" to confirm it if ya want. There ya go, you're swappiness is set to vm.swappiness=10 until your next reboot. Then ya can change it permanently by following the instructions in that link posted above.