Hi,
When using Xen, the host processing is different from the guests. I can give you an example, on one of our nodes:
top - 19:37:16 up 20 days, 23:14, 1 user, load average: 0.11, 0.08, 0.09
As you can see, the load average is very low. And, I'm able to see that one of our clients is...