Beginning with the z13 and continuing with z14 and z15, processor cache performance plays a more prominent role than ever before in the capacity delivered by processors

It is common in today’s challenging business environments to find IT organizations intensely focused on expense reduction. For mainframe departments, this often leads to high priority expense reduction initiatives for IBM Monthly License Charge (MLC) software, which is typically the single largest line item in their budget.

This white paper focuses on an area that has the potential to produce significant CPU savings, namely processor cache optimization. The magnitude of the potential opportunity to reduce CPU consumption and thus MLC expense available through optimizing processor cache is unlikely to be realized unless you understand the underlying concepts and have clear visibility into the key metrics in your environment.

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