A few weeks ago I posted about my interest in developing "resource control" for Xen -- e.g., low-level mechanisms that could be used to provide QoS guarantees to partitions, by enforcing SLA-type policies on the resources (CPU, network, storage, etc.) consumed by each domain.

I've come up with a requirements/design document that describes the motivation for this work and my initial plan of attack. The document is here: http://www.ece.cmu.edu/~griffin2/xen/

As per the earlier discussion, it's not a simple problem, so I'm interested to hear any comments on the expected effectiveness of this proposed approach. I'll update that page (and post updates here) as the work progresses.

JLG