Linux uso ram

Links muy buenos para entender el uso de RAM por Linux.

http://stackoverflow.com/questions/131303/how-to-measure-actual-memory-usage-of-an-application-or-process

http://unix.stackexchange.com/questions/87908/how-do-you-empty-the-buffers-and-cache-on-a-linux-system

http://www.linuxatemyram.com/

http://www.linuxatemyram.com/play.html