System Use Reporting › System Use Report Samples › Resource Utilization Graphs

Resource Utilization Graphs

The Device Occupancy Report requires CONFIG/CONFIGX statements for report generation. This report effectively identifies which peripheral devices are being used by the system, and how much they are being used.

• The scope of the report can be SHIFT n (n = 1 through 3) or TOTAL, with the time boundaries of the shift or day (24-hour period) given in hh.mm.ss format.
• The numeric values corresponding to each resource are displayed in columns on the left of the graph. OCCUPANCY TIME is the amount of time that the resource was allocated. PCT UTIL (percent utilization) is the occupancy time shown as a percentage of the time the device was available. For I/O devices, the number of EXCPs is also shown.
• I/O devices are represented by their physical addresses, in the form cuu. Devices are reported on in the order that the CONFIG/CONFIGX statements were entered, so that presenting tape devices first, then disk, and so forth, is under user control.
• The 100 PCT (percent) on the graph is equal to the difference between the shift (or day) end and begin times, multiplied by the number of days for which data was found.