Long description

The horizontal axis is labeled Degree of multiprogramming and ranges from 0 to 10 in increments of 1 unit. The vertical axis is labeled C P U utilization (in percent) and ranges from 0 to 100 in increments of 20 units. Three different curves are shown here. The first curve labeled 20 percent I/O wait starts at (0, 0), rises toward the upper right, is concave downward, then rises linearly to the point (1, 80), bends, moves horizontally and ends at (10, 100). The second curve labeled 50 percent I/O wait, starts at (0, 0), rises upward to the right, is concave downward, then merges with the first curve at the point (6, 100) and ends at (10, 100). Several points are marked on this line as follows: (1, 50), (2, 70), (3, 85), (5, 95), and (8, 100). The third curve labeled 80 percent I/O wait starts at (0, 0), rises toward the upper right, is concave upward, and ends at (10, 100). The curve passes through the following points: (1, 20), (2, 40), (3, 50), (5, 70), (6, 75), (7, 80), and (8, 95).