Dynamically adjusting an operating state of a data processing system running under a power cap

A computer program product comprising a non-transitory computer readable medium having a computer readable program recorded thereon, wherein the computer readable program, when executed on a computing device, causes the computing device to:

• set a counter value corresponding to an initial energy budget assigned to a unit for a given interval;
• responsive to the unit receiving an operation to perform during the given interval, decrement the counter value by a decrement value;
• and
• responsive to the given interval expiring:
• send the counter value to a power control loop in the data processing system;
• receive a new energy budget from the power control loop;
• and
• reset the counter value to a new value corresponding to the new energy budget assigned to the unit for a next interval.

An apparatus, comprising,

• a processor;
• and
• a memory coupled to the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to:
• set a counter value corresponding to an initial energy budget assigned to a unit for a given interval;
• responsive to the unit receiving an operation to perform during the given interval, decrement the counter value by a decrement value;
• and
• responsive to the given interval expiring:
• send the counter value to a power control loop in the data processing system;
• receive a new energy budget from the power control loop;
• and
• reset the counter value to a new value corresponding to the new energy budget assigned to the unit for a next interval.