Dynamic cpuset allocation to workloads for improved energy efficiency

A system comprising:

• a plurality of processor cores;
• and
• a memory device operably coupled to the plurality of processor cores, the memory device storing executable code that, when executed by the plurality of processor cores, causes the plurality of processor cores to:
• receive a specification for a software module, the specification including a request for a first number of processor cores of the plurality of processor cores and a limit of a second number of processor cores of the plurality of processor cores that is greater than the first number;
• reserve a full set of processor cores including the second number of processor cores of the plurality of processor cores for use by an instance of the software module;
• instantiate the instance of the software module;
• and
• configure the instance to use a reduced set of processors cores of the plurality of processors cores, the reduced set of processor cores including a third number of processor cores of the plurality of processor cores, the third number being greater than the first number and less than the second number.