Dynamic virtual processor manager

A computer program product for dynamic virtual processor management in a computer having a plurality of concurrent multi-threaded physical processors comprising:

• a virtual processor manager (VPM) of a computer operating system embodied on a computer readable storage medium, the VPM including program instructions executable by a processor, the program instructions comprising:
• program instructions to assign an active logical partition to one of a plurality of shared processor pools, each shared processor pool having a virtual processor manager mode, wherein each virtual processor manager mode is defined by a number of concurrent hardware threads per physical processor, a distribution of the concurrent hardware thread when dispatched among the physical processors, and a maximum percent utilization of the concurrent hardware threads that triggers a dynamic moving of the active logical partition from the assigned shared processor pool to an other shared processor pool having a different virtual processor manager mode;
• program instructions to compare a target performance metric for a workload in the active logical partition to a calculated CPU utilization ratio or a calculated response time ratio;
• and
• program instructions to dynamically move the workload in the active logical partition from the assigned shared processor pool to a logical partition in another of the plurality of shared processor pools based on the target performance metric not being met in the active logical partition, and wherein the logical partition in another of the plurality of shared processor pools is configured to meet the target performance metric.

A computer system for dynamic virtual processor management in a computer having a plurality of concurrent multi-threaded physical processors comprising:

• one or more processors, one or more computer-readable storage devices, and a plurality of program instructions stored on at least one of the one or more storage devices for execution by at least one of the one or more processors, the plurality of program instructions comprising:
• program instructions to assign an active logical partition to one of a plurality of shared processor pools, each shared processor pool having a virtual processor manager mode, wherein each virtual processor manager mode is defined by a number of concurrent hardware threads per physical processor, a distribution of the concurrent hardware threads when dispatched among the physical processors, and a maximum percent utilization of the concurrent hardware threads that triggers a dynamic moving of the active logical partition from the assigned shared processor pool to a different shared processor pool having a different virtual processor manager mode;
• program instructions to compare a target performance metric for a workload in the active logical partition to a calculated CPU utilization ratio or a calculated response time ratio;
• and
• program instructions to dynamically move the workload in the active logical partition from the assigned shared processor pool to a logical partition in another of the plurality of shared processor pools based on the target performance metric not being met in the active logical partition, and wherein the logical partition in another of the plurality of shared processor pools is configured to meet the target performance metric.