Consider the following set of processes, with the length of the CPU burst
given in milliseconds:
Process Burst Time Priority
P1 2 2
P2 1 1
P3 8 4
P4 4 2
P5 5 3
The processes are assumed to have arrived in the order P1, P2, P3, P4, P5,
all at time 0.
a. Draw four Gantt charts that illustrate the execution of these
processes using the following scheduling algorithms: FCFS, SJF,
nonpreemptive priority (a larger priority number implies a higher
priority), and RR (quantum = 2).
b. What is the turnaround time of each process for each of the
scheduling algorithms in part a?
c. What is the waiting time of each process for each of these scheduling
algorithms?
d. Which of the algorithms results in the minimum average waiting
time (over all processes)?