Compcache is a form of compressed ram swap that should improve performance in some circumstances for memory starved machines. http://code.google.com/p/compcache/
Apparently Ubuntu has had this available for a bit now, and I attempted to enable it, and found this post: http://ubuntuforums.org/showpost.php?p=6609064&postcount=10
What other steps do I have to take to enable compcache on Ubuntu, or is that it?