How frequency distribution ranges are defined
A set of ten intervals is defined for each summary line and the occurrences falling in each interval are cumulated. The interval ranges are preset with default end points. The default end points are chosen so that they are suitable to the event.
For example, the end points, for DL/I call elapsed time are: 0, 1000, 2000, 4000, 8000, 16000, 32000, 64000, 128000, 256000, INF (all times are in milliseconds). The lower limit of the first interval always defaults to zero, and the upper limit of the tenth interval is infinity (INF).
Although several types of distribution can use the same set of end points, each type is assigned a distribution identifier. You can use this to redefine the end points. To override the default end points, include an input control statement to the Report Print utility. The statement specifies the type of distribution identifier and gives the desired end point values. For example, the DL/I call elapsed time end points could be respecified by:
D5 0,500,1000,1500,2000,4000,,,100000,500000The values of the unspecified end points remain at their default values of 32000 and 64000 as does the last (INF).
The following example, which is a sample page taken from a Distribution Appendix, shows how individual distributions are numbered, and how ranges vary with the type of distribution. The lines are arranged in pairs, with the second one recording the cumulated counts.
IMS MONITOR ****DISTRIBUTION APPENDIX**** TRACE START 1993 130 5:55:15 TRACE STOP 1993 130 5:59:49 PAGE 0200
# 1...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 2...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 3...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 4...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 5...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 6
# 6...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 8
# 7...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 8...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 9
# 9...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 10...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
1 0 0 0 0 0 0 0 0 7
# 11...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 12...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 8
# 13...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 14...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1
# 15...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
1 0 0 0 0 0 0 0 0 8
# 16...........0.....200000.....400000.....600000.....800000....1000000....1200000....1400000....1600000....1800000....INF
0 0 0 0 0 0 0 0 0 1