You can see the abstract below
Introducing Kernel Samepage Merging
The motivation of KSM comes from the observation that on a large machine running several virtual machines (potentially running the same OS), there are a number of duplicate pages, each consuming a page of memory in the hypervisor.
The URL for the magazine is http://lfymag.com/currentissue.asp?id=13
Go rush and get the January 2010 copy, comments, feedback, criticism always appreciated!