All the graphs produced by CICS PA have a similar structure. Data from the CMF performance class records is collected and time-stamped based on the Stop Time from the CICSĀ® CMF performance class records. When the entire input data is processed, the graphing facility of CICS PA is used to print the data. Each line on a graph represents activity for transactions that stopped between the time marked on the current line and the time marked on the previous line.
The default is to print one line for each 5-minute period. The INTERVAL operand can be used to accumulate data spanning from 1 second to 24 hours. The data is presented as a single line on a graph. For example:
CICSPA GRAPH(RESPONSE,INTERVAL(00:00:03))
This example generates the Transaction Response Time graph with each line containing data for each 3-second interval.
CICSPA SELECT(PERFORMANCE(INCLUDE(
START(FROM(2010/02/13,08:00),
STOP(TO(2010/02/13,18:00))))),
GRAPH(RESPONSE)
generates the Response Time graph, with the y-axis of the graph beginning at 8:00 in the morning and ending at 6:00 in the evening on February 13, 2010.
CICSPA GRAPH(RESPONSE,RANGE1(4),RANGE2(4))
generates the Transaction Response Time graph using the entire acceptable service level as the range of the x-axis. If a line's data exceeds the x-axis range for a graph, the line is printed with an arrow (->) at the end.
For example, if there are long-running transactions such as transactions which span entire monitor intervals, the data from these records for these transactions is reflected in the graph of the interval in which the transaction finishes. This data might be different from the intervals in which the data is collected.
For more information on interpreting performance class data, see the CICS Performance Guide.