Clock time

Clock time shows the length of time that the application spent in Execution, Wait, and Stretch:

  • Session duration is the actual duration of the measurement session, expressed in minutes and seconds to the nearest hundredth. If the sample data set could not be closed properly (for example, because execution of the job in the address space was cancelled), a warning message appears in this area, and several related fields are blank.

  • Execution is the amount of run time during the measurement session that one or more CPUs were executing tasks in the measured job step, exclusive of the measurement task itself, expressed in minutes and seconds to the nearest hundredth.

  • Wait is the estimated portion of run time that no task within the measured address space was able to make use of the CPU time available to it, expressed in minutes and seconds to the nearest hundredth. Click the bar graph to view the Top Resource Demand Usage report.

  • Stretch is the estimated amount of time that the CPU was unavailable to process programs executing in the address space because of demands by higher-priority address spaces and by SRB processing time for all address spaces. Stretch time may be high when multiple logical partitions (LPARs) are executing on the same complex of processors.

  • Multiprocessor ratio is the amount of CPU time consumed divided by the execution run time, expressed as a decimal number to the nearest hundredth.

More about the Measurement Session Data report