Question: A preemptive foreground/background system has three interrupt-driven cycles, described by Table 7.4 (with context switch time ignored): (a) Draw an execution time line for this

A preemptive foreground/background system has three interrupt-driven cycles,

described by Table 7.4

(with context switch time ignored):

Table 7.4 Table for time-loading Exercise 7.14 Task Cycle Actual Execution Priority

(a) Draw an execution time line for this system.

(b) What is the CPU utilization?

(c) Considering the context switch time to be 1 millisecond, redraw the execution time line for this system.

(d) What is the system time-loading (CPU utilization) factor with the context switch time included?

Table 7.4 Table for time-loading Exercise 7.14 Task Cycle Actual Execution Priority Time (ms) (1 is highest, 10 is lowest) 10 ms 20 ms 40 ms Background 4505 10 132|

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