So basically the same thing Vista was doing (prefetch, and admittedly it did a shitty job with >1GB ram), except since its Linux, Oh its all fine guys, we won't destroy the OS' reputation.
The page is about explaining a correct behavior, not justifying some bogus memory usage. There's no reputation at stake. All modern operating systems are expected to behave that way, free RAM is wasted RAM.
Maybe not, but there were a lot of people needlessly going bonkers over the disk light blinking (SuperFetch) and free memory numbers in the task manager(exactly the same problem that the referenced site is trying to explain).
Linux has been doing this for a lot longer than Windows has. (Which I only actually know because there was so much FUD about Vista's pre-fetching when it came out.)
edit: Sorry, getting prefetching and SuperFetch confused.
Doing what? Prefetching? It has been there since XP.It is not just simple caching. Windows probably was doing caching even before Linux existed.
What Vista does is SuperFetch and I don't think it's there in Linux even now, except that someone wrote a program that would do a similar thing but it's not really used that much.
