Originally Posted by origami-sheep
i read that it can massively improve responsiveness to mount certain directories in RAM (one guy claimed it can make firefox open in under half a second)
i can see the benefit of doing this, but how would i go about doing so? in particular how could i get it to write the modified files back to /usr?
fyi the ones i think would have greatest impact are
/usr/bin /usr/sbin /usr/lib and /lib
Generally speaking, the idea of using ram to speed things up isn't really worth it, for most users.
(I believe some servers use it to speed access times to large databases, etc.)
Yes it can be done by creating a ram disk, copying to it, & remounting onto it.
If you're still interested, look up 'ram disks'.