Record Size Distribution report
This report contains a printed histogram of the sizes of all database records.
If the PAD operand of COMPRTN= parameter in DBDGEN SEGM statement is defined, and the length of the fixed-length segment is shorter than the PAD value by the Segment Edit/Compression exit, the PAD value is used to calculate the size of the database records instead of the segment length.
You can specify the width of the histogram classes in column 58 of your control statement (see FABSPSSR CTL data set or FABSPSSI CTL data set). For databases with a large number of database records, this report is much more useful than the Record Sizes report.
The following figure shows an example of this report.
IMS HIGH PERFORMANCE LOAD - PSSR "RECORD SIZE DISTRIBUTION REPORT" PAGE: 1
5655-M26 DATE: 10/01/2023 TIME: 10.35.37 FABSPE15 - V2.R1
CLASS DB-RECORDSIZE OBSERVED PERCENT CUMULATIVE CUMULATIVE
FROM TO FREQUENCY OF TOTAL PERCENTAGE REMAINDER
1 1 50 1 10.000 10.000 90.000
3 101 150 1 10.000 20.000 80.000
7 301 350 1 10.000 30.000 70.000
8 351 400 1 10.000 40.000 60.000
9 401 450 2 20.000 60.000 40.000
10 451 500 1 10.000 70.000 30.000
13 601 650 1 10.000 80.000 20.000
14 651 700 1 10.000 90.000 10.000
26 1251 1300 1 10.000 100.000 0.000
ENTRIES IN TABLE = 10 MEAN ARGUMENT = 478.100 STANDARD DEVIATION = 334.633
NOTE : RANGES WHERE OBSERVED FREQUENCY IS 0 ARE NOT DISPLAYED