Computer Science Question

I have an assignment in the subject (Operating Systems)

Start with the attached random workload consisting of two dozen jobs. Assume the system’s context switch time is 1 μs.Make a Gantt chart showing FCFS scheduling of these jobs. Calculate the average waiting time and throughput per second.Make another Gantt chart showing priority scheduling based on RR with a time quantum of 20 ms. Calculate the throughput and the average waiting time and throughput per second.Use SJF and calculate the ideal throughput and average wait time. Compare this to FCFS and determine the improvement in wait time and throughput by using priority SRTF.

Data set 1
Process
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
CPU Time
135
50
111
37
4
145
142
39
73
11
116
25
83
125
28
81
2
87
77
83
138
62
124
80