The z/VSE Turbo Dispatcher
The Turbo Dispatcher is the only dispatcher supported by z/VSE, and is always active.
The Turbo Dispatcher support is available for uniprocessors and multiprocessors. The Turbo Dispatcher can utilize multiprocessors by distributing the workload across several processors (CPUs), enabling them to work in parallel and thus increase the overall throughput of a z/VSE system.
Partition balancing allows the operator to specify a relative share of CPU time for any static partition and any dynamic class of a balanced group. This allows a more refined control of workload distribution.
Note: The z/VSE Turbo Dispatcher can exploit up to 3-way processors
and in some cases up to 4-way processors (with the known workloads
of today) and tolerates up to 10-way processors.
The Turbo Dispatcher provides:
- The same partition balancing support for a uniprocessor as described above for a multiprocessor environment.
- Planning information, by showing to what extent a workload running on the uniprocessor would be able to exploit the CPUs of a multiprocessor.