Power management for processing capacity upgrade on demand

摘要

A method, computer program product, and apparatus for managing power management in a data processing system are presented. A core is activated and configured to operate at a frequency in response to a request to increase a processing capacity. A determination whether a use of power resulting from activating the core meets a policy for the use of the power is made. A set of parameters is adjusted to meet the policy for the use of power in response to a determination that the use of power does not meet the policy. A determination whether a number of operations performed by a set of cores is made. An indication that the request to increase the processing capacity is unavailable is made in response to the number of operations having not increased.

主权项

1. A method for managing power in a data processing system, the method comprising:
responsive to receiving a request to increase a processing capacity of a set of resources in the data processing system, determining whether to activate a core in the data processing system configured to operate at a first frequency at the first frequency, wherein the core is part of the set of resources, and determining a second frequency of a set of cores in the set of resources and a current number of operations performed per unit of time by the set of cores operating at the second frequency; determining whether a use of power resulting from activating the core at the first frequency meets a policy for the use of the power in the data processing system; responsive to determining that the use of power resulting from activating the core at the first frequency and the second frequency does not meet the policy, determining a third frequency that the set of cores and the core can operate at while meeting the policy for the use of the power in the data processing system; determining a predicted number of operations performed per unit of time for the set of cores and the core operating at the third frequency; presenting a difference between the current number and the predicted number; requesting approval for activating the core at the third frequency before activating the core in the data processing system; and responsive to receiving approval for activating the core, activating the core at the third frequency.