DVM for z/OS was recently included in a published
whitepaper by the IBM Competitive Office specific to zIIP offload for specific workloads. Generally speaking, the white paper details how to get the most out of your IBM Z by leveraging z Integrated Information Processors (zIIPs) and highlights various technologies that have eligibility for this type of processing.
IBM DVM uses a patented mainframe threading technology to run up to 99% of its data virtualization processing on the IBM Z Integrated Information Processor (zIIP), which effectively eliminates any capacity usage on the mainframe CPU (see Figure 2-4). IBM DVM also uses a hybrid threading model that pairs a Task Control Block (TCB) thread with a Service Request Block (SRB) thread to optimize workloads that are running on the zIIP.
For qualified workloads to use the zIIP specialty engine, they must run in SRB mode. For organizations that are using DVM to access, join, or move large volumes of non-relational mainframe data, the use of zIIP engines can significantly reduce mainframe costs. Results can vary depending upon the data source, access method, and effective DML operations in use.
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Doug Dailey
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#Db2Toolsforz/OS