US 2019/0171460 A1 · INSTRUCTIONS SCHEDULER OPTIMIZATION

Abstract

In an approach for moving workloads between central processing units (CPUs) to accommodate balance, a processor profiles a first processor and a second processor of a plurality of processors, using a cycle per instruction metric. A processor assigns a first group of instructions to the first processor and a second group of instructions to the second processor. A processor sums an instruction count for the first group of instructions and an instruction count for the second group of instructions. A processor determines that a balance condition, defined by a predetermined threshold, does not exist across the first processor and the second processor. A processor identifies the second processor has a lower cycle per instruction metric than the first processor. A processor moves a workload, running on the first processor, with a maximum number of instructions of an unbalanced group to the second processor to balance workloads.

Claims20

Dependent claims

A method comprising:

profiling a first processor and a second processor of a plurality of processors, using a cycle per instruction metric;
assigning a first group of instructions to the first processor and a second group of instructions to the second processor;
summing an instruction count for the first group of instructions;
summing an instruction count for the second group of instructions;
determining that a balance condition, defined by a predetermined threshold, does not exist across the first processor and the second processor;
in response to the balance condition not existing, identifying the second processor has a lower cycle per instruction metric than the first processor;
and
moving a workload, running on the first processor, with a maximum number of instructions of an unbalanced group to the second processor to balance workloads.

5 more elements

A computer program product comprising:

one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising:
program instructions to profile a first processor and a second processor of a plurality of processors, using a cycle per instruction metric;
program instructions to assign a first group of instructions to the first processor and a second group of instructions to the second processor;
program instructions to sum an instruction count for the first group of instructions;
program instructions to sum an instruction count for the second group of instructions;
program instructions to determine that a balance condition, defined by a predetermined threshold, does not exist across the first processor and the second processor;
in response to the balance condition not existing, program instructions to identify the second processor has a lower cycle per instruction metric than the first processor;
and
program instructions to move a workload, running on the first processor, with a maximum number of instructions of an unbalanced group to the second processor to balance workloads.

6 more elements

The computer system comprising:

one or more computer processors, one or more computer readable storage media, and program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more computer processors, the program instructions comprising:
program instructions to profile a first processor and a second processor of a plurality of processors, using a cycle per instruction metric;
program instructions to assign a first group of instructions to the first processor and a second group of instructions to the second processor;
program instructions to sum an instruction count for the first group of instructions;
program instructions to sum an instruction count for the second group of instructions;
program instructions to determine that a balance condition, defined by a predetermined threshold, does not exist across the first processor and the second processor;
in response to the balance condition not existing, program instructions to identify the second processor has a lower cycle per instruction metric than the first processor;
and
program instructions to move a workload, running on the first processor, with a maximum number of instructions of an unbalanced group to the second processor to balance workloads.

6 more elements

Dependencies are inferred from the claim text.

Instructions scheduler optimization

Life of this patent

Instructions scheduler optimization

Life of this patent

Abstract

Claims20