Abstract: An entitlement management system for distributing spare CPU processor resources to a plurality of deployment groups operating in a data processing system, the system comprising: a deployment group entitlement component comprising: an allocation component for allocating a plurality of micro-partitions to a deployment group; a determining component for identifying spare CPU processor cycles from a donor micro-partition and distributing the identified spare CPU processor cycles to a requester micro-partition in the deployment group; the determining component further comprises identifying when there are no further spare CPU processor cycles to be donated to any of the micro-partitions in the deployment group and communicating a request to a management entitlement component; and a management entitlement component receiving requests from at least two deployment group entitlement components and identifying if one of the deployment groups has spare CPU processor cycles to donate to a further deployment group and on a