Benefit
HiperDispatch offers very little CPU savings benefit on machines configured with a relatively small number of CPUs. However, the feature does help quite a lot as the CPU count increases. IBM mainframe capacity tables (and thus its software pricing) are all based on the assumption that HiperDispatch is active.
The other benefit of HiperDispatch - "parking" logical CPUs so that the number of CPUs on which z/OS dispatches work more closely matches the LPAR's weight - is applicable to even small machine configurations. (The benefit of this is the reduction of the "short engine" effect, making system performance more responsive.
Read more about this topic: Hiper Dispatch
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