General lab description
The data for our tests were generated using IEBDG utility. The JCL and commands used are shown in Example B-1. We generated 2M records to create a master KSDS cluster, with random binary key. The data was the same for all tests, except for those tests compared with the data of first edition of this book.
The type of data and the number of records are not the same as that used in the first edition of this redbook. We increased the number of records and types of data due to changes in CPU velocity, data rate (like FICON) and enhancements in ESS (SHARK).
Example B-1. JCL for data test
//CREATE EXEC PGM=IEBDG //SYSPRINT DD SYSOUT=* //TESTOUT DD DSN=MHLRES2.DATA.VSAM,DISP=(,CATLG),UNIT=SYSDA, // LRECL=300,RECFM=FB,SPACE=(CYL,(500,500),RLSE), ... |
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