Patent ID: 8407499

Claim:
A method for power management in a virtualized environment wherein a plurality of computer applications running concurrently on a plurality of virtual processors in partitions share a set of physical processors in a shared processor pool comprising: partitioning said plurality of logical processors into a set of partitions wherein each partition provides a logical processor to an entitlement of at least a portion of one of said set of physical processors; enabling a request for an amount of power change by a partition; responsive to said request for power change, distributing an equal proportion of the whole amount of power change by changing the frequency of all of the processors in said shared pool wherein each of said set of partitions is affected by said power change; reducing said entitlement of said requesting partition by an amount corresponding to the whole amount of said frequency change; and increasing the entitlement of each non-requesting partition by an amount corresponding to the proportion of said power reduction of processors used by said non-requesting partition.