Quantification

A graph, in bar chart format, is displayed for each DDNAME. The horizontal axis represents the measurement interval which spans 50 columns. Each column represents an equal 1/50th sub-interval of time. A scale is shown at the bottom of the graph indicating the percentage of time progression in the overall interval.

In each column, a vertical graph shows (roughly) how much I/O activity took place during the sub-interval. If any I/O activity did take place, a vertical bar of 1, 2, 3, 4 or 5 characters, extending upward from the scale, is displayed indicating the percentage of time in the sub-interval I/O was observed.