Abstract: A control system for controlling resource entitlement for a resource compartment in a resource-on-demand system includes nested loops. An inner loop includes an adaptive feedback control system including an adaptive controller operable to automatically determining a gain for the control system. The gain varies depending on a demand of the resource compartment in a previous interval, and the adaptive controller is operable to determine a resource entitlement for the resource compartment for a current interval based on the gain and a target utilization for the current interval. An outer loop includes a feedback control system operable to automatically determine the target utilization for the current interval, wherein the target utilization varies based on at least one QoS metric measured for the previous interval and a QoS metric target.

Abstract: Embodiments of the present invention pertain to dynamically resizing a virtual machine container. According to one embodiment, an optimal utilization is determined based on a desired performance for a multi-tiered application and transaction mix information that describes a mix of transactions that result from executing the multi-tiered application. Automatic modification of an amount of a physical resource a virtual machine container is entitled to for executing a particular application component associated with the multi-tiered application is enabled where the amount is automatically modified based on the optimal utilization.

Abstract: A method for controlling resource allocation is provided. The method includes determining a service metric associated with a first application, wherein the first application is associated with one or more virtual machines. The method further includes comparing the service metric to an application specific service level goal associated with the first application and modifying a resource allocation associated with the first application at one or more of the virtual machines.