Computing system voltage control

摘要

An indication of a first performance state is received, the first performance state being associated with a first voltage. The first performance state applies to at least one computing system component and the indication is received by a computing system component distinct from the requesting computing system component. An indication of a second performance state is received. The second performance state is associated with a second voltage that is different from the first voltage. It is determined whether the second performance state is within a range defined by a minimum and maximum performance state. Responsive to a determination that the second performance state is within the minimum and maximum performance state, the voltage of the at least one computing system component is set equal to the voltage associated with the second performance state.

主权项

1. A computer program product comprising:
a computer readable storage medium having computer usable program code embodied therewith, the computer usable program code comprising computer usable program code to:
receive, from a first component, an indication of a first frequency/voltage pair;set an operating frequency of a second component equal to the frequency of the first frequency/voltage pair;receive, from a third component, an indication of a voltage offset;determine a target voltage based, at least in part, on the voltage offset and the voltage of the first frequency/voltage pair, wherein the target voltage is different from the voltage of the first frequency/voltage pair;determine whether the target voltage is less than a minimum voltage;responsive to a determination that the target voltage is less than the minimum voltage, set an operating voltage of the second component equal to the minimum voltage without modifying the operating frequency of the second component;responsive to a determination that the target voltage is not less than the minimum voltage, set the operating voltage of the second component equal to the target voltage without modifying the operating frequency of the second component;wherein the indication of the first frequency/voltage pair is specified as a first performance state, wherein the voltage offset specifies a second performance state relative to the first performance state, and wherein the target voltage is a voltage associated with the second performance state.