The RNI-based LSPR and the Latest z Systems Processors

Project and Program: MVS, MVS Performance

Tags: Proceedings, SHARE Providence 2017, 2017

With the introduction of z196 in 2010, the Large System Performance Reference (LSPR) was significantly enhanced to be based on a measure of a workload's intensity of use of a processor's memory hierarchy. Since then the methodology has seen much validation and continues to be used up through the latest z Systems processors. This session will discuss the theory behind the Relative Nest Intensity (RNI) metric and its basis on data gathered using CPU MF. Its application to capacity sizing will be illustrated by contrasting the performance of the latest z Systems processors.-David Hutton-IBM

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