z/VM HiperDispatch support

z/VM HiperDispatch improves CPU efficiency by causing the Control Program to run work in a manner that recognizes and exploits z17 topology to increase the effectiveness of physical machine memory cache. This includes:

• Requesting the PR/SM Hypervisor to handle the partition's logical processors in a manner that exploits physical machine topology
• Dispatching virtual servers in a manner that tends to reduce their movement within the partition's topology
• Dispatching multiprocessor virtual servers in a manner that tends to keep the server's virtual CPUs logically close to one another within the partition's topology.

z/VM HiperDispatch can also improve CPU efficiency by automatically tuning the LP's use of its logical CPUs to try to reduce multiprocessor effects. This includes:

• Sensing and forecasting key indicators of workload intensity and of elevated multiprocessor effect
• Autonomically tuning the z/VM system to reduce multiprocessor effects when it is determined that z/VM HiperDispatch can help to improve CPU efficiency.