September 2002
Intermediate to advanced
332 pages
11h 1m
English
Content preview from IBM eServer zSeries 900 Technical Guide
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184 IBM eServer zSeries 900 Technical Guide
Figure 5-3 z900 ICF options - Shared ICFs
5.2.5 Dynamic CF dispatching and dynamic ICF expansion
The CF Control Code (CFCC), the “CF Operating System,” is implemented using the Active
Wait
technique. This means it is always running (processing or searching for service) and
never enters into a wait state. This also means that it gets all the processor capacity (cycles)
available for the CF LP. If this LP uses only dedicated processors (CPs or ICFs), this is not a
problem. But this may not be desirable when it uses shared processors (CPs or ICFs).
Dynamic CF dispatching provides the following function ...
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