KSM and KVM

Hi, I dont see many people replying on this forum, but thought I would give it a try.

I was curious about KSM and if anyone had any information other then the basics. I have it running on a Fedora 12 box and I see ksmd running, but I do not know how to see if it is actually doing any good. my memory usage does not go down and I do not see anywhere I can see some sort of status on it. This worries me cause its constantly takes up 50% of a CPU and I do not see much benefit.