In addition to the performance improvements available with the IBM® System z10™ processors, z/OS® workload management and dispatching are enhanced to take advantage of the System z10 hardware design. A mode of dispatching called HiperDispatch provides additional processing efficiencies.
The HiperDispatch mode aligns work to a smaller subset of processors to maximize the benefits of the processor cache structures, and thereby, reduce the amount of CPU time required to execute work. Access to processors has changed with this mode, and as a result, LPAR weights prioritization of workloads via WLM policy definitions becomes more important.