Acquire can either generate a rounded interval (to the nearest minute), or can utilize the exact length of the RMF interval in seconds. While most of the time this rounding causes no problems, if data is presented that has irregular interval lengths then it is possible to generate incorrect utilization values for systems, whose totals could implausibly exceed 100%.
A control card of INTROUND= allows the user to choose whether Acquire should round intervals to whole minutes (INTROUND=Y, the default) or whether to request more accurate interval values (INTROUND=N).
If you use INTROUND=N, you may need to adjust your Syncsort Capacity Management charts so that they display correctly, as the graphics engine expects regular intervals by default. You may need to click on the Nominal Gaps button or turn off gaps all together the chart to force the chart to display properly.
One minute is the absolute lower limit of granularity for core reporting in Syncsort Capacity Management
If an interval that is shorter than one minute is detected, Acquire will display messages in the IPLIST and MULTLIST files, similar to this example. The job will end with COND CODE = 4.
Under //IPLIST:
ACQUIRE/ZOS-DIRECT Vv.vv.r (ddmmyy) - INPUT LISTING AND DIAGNOSTICS 20JUN13
RUNTYPE=COLLECT
TARGET=0000032=SYS1
COLLECT RUN COMPLETED
*** 00001 SHORT INTERVALS DETECTED, SEE //MULTLIST REPORT
Under //MULTLIST:
SMF FILE START END NO RMF
ID NO DATE TIME DATE TIME INTVALS
SYS1 1 20NOV06 15:00:00 20NOV06 15:15:00 1
SYS1 2 20NOV06 15:15:00 20NOV06 15:30:00 1
SYS1 3 20NOV06 15:30:00 20NOV06 15:30:27 1
*** WARNING, INTERVAL IS SHORTER THAN CORE REPORTING ALLOWS FOR
SYS1 4 20NOV06 18:07:00 20NOV06 18:15:00 1The INTROUND=Y parameter should also be used if you intend to capture job detail as the rounding of RMF intervals can cause incorrect location of job interval and end events to occur. See the description of this parameter later.