Attributing energy consumption to individual code threads in a data processing system

A data processing system, comprising:

• a functional unit implemented in hardware to perform tasks for multiple objects including at least one task supporting a first object and a second object;
• a hardware energy monitor implemented in hardware to measure total energy consumed by the functional unit during a measurement period absent separate measurement of energy consumed during the first and the second portions of the measurement interval;
• a scheduler to provide timing information indicative of time portions of the measurement period during which the functional unit was performing the at least one task for each of first and second objects;
• and
• an application to attribute portions of the total energy to each of the objects based on the timing information and the total energy consumed by the functional unit during the measurement interval, including deriving maximum and minimum energy constraints for each of the objects and determining an energy consumption value between the constraints.

A computer program product comprising computer executable instructions, stored on a computer-readable medium, for attributing energy consumption in a data processing system to objects executing in the system, the program product comprising:

• computer code to determine a total energy consumed by the data processing system during a measurement period absent separate measurement of energy consumed during the first and the second portions of the measurement interval;
• computer code to determine timing information for a plurality of objects within a single task, wherein the timing information is indicative of which objects were executing during the measurement period;
• computer code to use the timing information and the total energy to attribute the energy to each of the objects, including deriving maximum and minimum energy consumption constraints for each of the objects;
• and
• computer code to determine an energy consumption value for each object between the maximum and minimum energy consumption constraints associated with that object.