Re: modem works!, battery drains fast?
Another thing you can do, that trades off Unix semantics for battery
efficiency, is to mount all your filesystems with the 'noatime'
option. If you don't do this, even reading a file that's in cache
will cause a disk write, to update the access time field of the
inode. There isn't much on a typical workstation that depends on
'atime' being correct, so it's probably worth doing for laptops.
I got this off linux-kernel a while back and hadn't seen it mentioned
yet, so I thought I'd pipe up.