Data center power adjustment

摘要

A power cap agent establishes a power cap. The power cap agent throttles a first power priority virtual machine. The power cap agent determines that the first power priority virtual machine and the additional power priority virtual machine contribute to power consumption above the power cap among the plurality of servers. The power cap agent throttles the additional power priority virtual machine, wherein the first power priority virtual machine has a first power priority lower than an additional power priority of the additional power priority virtual machine. The power cap agent determines that the first power priority virtual machine and the additional power priority virtual machine contribute to power consumption above the power cap, responsive to throttling the first power priority virtual machine and throttling the additional virtual machine.

主权项

1. A computer implemented method for restoring power utilization to a data center comprising:
receiving from a computer room air conditioning unit a notice of relieved power cap, wherein the notice of relieved power cap cancels a previously received request to limit power to a level in the data center, wherein a plurality of shut off logical partitions rely on resources of a data processing system to operate, and in response, booting the plurality of shut off logical partitions, wherein booting occurs by applying a clock signal to a data processing core among a plurality of data processing systems in the data center; instantiating the plurality of power priority virtual machines by allocating to each power priority virtual machine resources reserved by a logical partition among the logical partitions to the use of the power priority virtual machine, wherein the logical partition is among the logical partitions that were booted in response to receiving from a computer room air conditioning unit a notice of relieved power cap; and restoring the plurality of power priority virtual machines by restoring the plurality of power priority virtual machines to a second level greater than the level in the data center, and less than full power, and subsequently restoring the plurality of power priority virtual machines to full power.