This report shows how much I/O time was used by each DASD (direct access storage device) or tape device for which activity was measured during the observation session. The quantification is based on the number of samples activity on the device was observed. This is expressed as a percentage of the total number of samples.
Two types of detail lines are shown:
Initially, only the Volume lines are visible. You can expand a Volume line (using the "+" line command) to reveal its subordinate Cylinder Address lines.
A sample report is shown here, it has been fully expanded:
File View Navigate Help -------------------------------------------------------------------------------- D01: DASD Usage Time by Device (0618/TSTJOB01) Row 00001 of 00006 Command ===> __________________________________________________ Scroll ===> CSR Volume>Cyl Unit-Dev>DD Percent of Time * 10.00% ±2.2% *....1....2....3....4....5....6....7....8.. BKNSM2 0A93-3390 8.90 ==== -> Cyl_00BA VSAM1 8.85 ==== -> Cyl_0007 VSAM1 0.05 BKNSM1 0A92-3390 1.25 == -> Cyl_0086 INFILE 1.25 ==
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