zIIP

IBM System z Integrated Information Processor ( zIIP ) is a special-purpose processor for the IBM mainframe models of the System z family.

ZIIPs are able to outsource any work from the regular processors, so that the other processors are relieved. The proportion of the work to be outsourced depends on the system or middleware component, which makes use of this technique. First zIIPs were exploited by DB2. Meanwhile, a growing number of applications to be executed zIIPs.

The zIIP is not optimized. Rather, it is a "normal" z / Series CPU that is no longer in a position by microcode changes, perform other than the relevant work. zIIPs are not included in the calculation of the power ( the so-called MSU - rate ), whereby the software costs can be reduced.

Likewise zIIPs always run at full speed while the other CPUs are " throttled " under circumstances depending on the ordered processing power.

Uses for DB2

Since the DB2 z / OS Version 8 of the zIIP can be used to perform some processing on that processor.

  • DRDA requests
  • Star schema table accesses
  • Processing utilities such as LOAD, REORG, and REBUILD
  • Coordination of parallel execution of different SQL statements
  • XML processing
  • Network encryption (IPSec)
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