 | Introduction |
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Performance objectives |
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Methodology |
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Modeling and benchmarking |
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Resources to tune |
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MVS interface |
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Terminology |
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Address spaces |
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MVS multitasking |
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Multiprocessors |
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Task Control Blocks (TCB), Service Request Blocks (SRB), Work Element Blocks (WEB), real, auxiliary, expanded storage |
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Hyperspace |
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Dataspaces |
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CICS initialization |
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Initialization sequence |
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KE_Task space |
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Dynamic Storage Area (DSA) |
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Dispatching |
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MVS dispatching and the System Resources Manager (SRM) |
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CICS/ESA dispatcher domain |
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Including priorities, MXT, ICV, and ICVR AMXT where applicable |
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Storage Management |
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MVS storage areas and storage isolation |
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CICS/ESA storage manager domain including DSAs cushions, notify task |
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Loader domain |
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Dynamic program storage compression |
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Program load times - discussion on LLA, LPA, and VLF facilities |
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Application considerations, paging versus loading |
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Network |
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CICS and Virtual Telecommunications Access Method (VTAM), RAPOOL, RAMAX, SEND/RECEIVE sizes, ICVTSD, OPNDLIM, HPO, and application issues |
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Multiregion Operation / Intersystem Communication (MRO/ISC) |
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MRO batch |
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Data transformations and transmission overheads |
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Priorities and sympathy sickness |
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Application issues |
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Direct Access Storage Device (DASD) Input/Output (I/O) |
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Anatomy of an I/O |
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Cache exploitation, buffering techniques |
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Virtual Storage Access Method (VSAM) considerations |
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NSR and LSR, IMBED and REPLICATE |
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CI and CA splits |
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Shared data tables |
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Multivolume allocation |
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Journaling |
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BUFFER, BUFSUV, where applicable, AKPFREQ |
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Synchronous and asynchronous I/O |
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Transient data |
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ATI, available terminals |
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Impact of logical and physical recovery serialization |
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Buffering QSAM |
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Temporary storage |
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RCT parameters |
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Thread creation/termination and reuse |
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Storage considerations |
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DPMODE |
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Entry, dedicated, and pool threads |
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Transaction volume considerations |
