CPU Scheduling in Operating Systems: Turnaround Time Quiz

In CPU scheduling, Turn Around Time (TAT) is calculated as Completion time (CT) – Arrival time (AT). Solution: Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT). Average Turnaround Time = Turnaround Time / # of processes.

Process ID Completion time Turnaround time P1 9 17 9-4=5 17 - 6 = 11 5–5=0 11 – 4 = 7 3 19 3–0=3 19 – 6 = 13 3–3=0 13 – 2 =11 P2 P3 P4 Waiting time P5 13 13 – 5 = 8 8–4=4 ______ Turnaround Time = (5 + 11 + 3 + 13 + 8) / 5 = 40 / 5 = 8 milliseconds ______ Waiting Time = (0 + 7 + 0 +1 + 4) / 5 = 22 / 5 = 4.4 milliseconds Soha A.

Mohamed P1 3 4 P5 9 P4 P2 13 17 19 Lecture 04: CPU Scheduling CS 206: Operating Systems ▪ Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT) Solution: ▪ Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT) ▪ _______ Turnaround Time = Turnaround Time / # of processes

Process ID Completion time Turnaround time P1 9 17 9-4=5 17 - 6 = 11 5–5=0 11 – 4 = 7 3 19 3–0=3 19 – 6 = 13 3–3=0 13 – 2 =11 P2 P3 P4 Waiting time P5 13 13 – 5 = 8 8–4=4 Average _______ Time = (5 + 11 + 3 + 13 + 8) / 5 = 40 / 5 = 8 milliseconds

Mohamed P1 3 4 P5 9 P4 P2 13 17 19 Lecture 04: CPU Scheduling CS 206: Operating Systems ▪ _______ Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT) Solution: ▪ Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT)

In CPU scheduling, Turn Around Time (TAT) is calculated as Completion time (CT) – Arrival time (AT). Solution: Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT). ______ Turnaround Time = Turnaround Time / # of processes.

_______ Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT)

Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT) Solution: Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT) _______ Turnaround Time = Turnaround Time / # of processes

Throughput, Turnaround time, and CPU utilization are important criteria in CPU scheduling to optimize _______ performance.

Processes in main memory are scheduled based on algorithms to achieve better CPU utilization and reduce _______.

Scheduling is done so as to ____________ a) increase CPU utilization b) decrease CPU utilization c) keep the CPU more idle d) none of the mentioned

In CPU scheduling, Turn Around Time (TAT) is calculated as Completion time (CT) – Arrival time (AT). Solution: Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT). Average _______ Time = (5 + 11 + 3 + 13 + 8) / 5 = 40 / 5 = 8 milliseconds

______ Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT) Solution: ▪ Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT)

______ Waiting Time = (0 + 7 + 0 +1 + 4) / 5 = 22 / 5 = 4.4 milliseconds Soha A. Mohamed

Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT). Solution: Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT) _______ Turnaround Time = Turnaround Time / # of processes

In CPU scheduling, Turn Around Time (TAT) is calculated as Completion time (CT) – Arrival time (AT). Solution: Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT). Average _______ Time = Turnaround Time / # of processes.

Process ID Completion time Turnaround time P1 9 17 9-4=5 17 - 6 = 11 5–5=0 11 – 4 = 7 3 19 3–0=3 19 – 6 = 13 3–3=0 13 – 2 =11 P2 P3 P4 Waiting time P5 13 13 – 5 = 8 8–4=4 Average _______ Time = (5 + 11 + 3 + 13 + 8) / 5 = 40 / 5 = 8 milliseconds.

Mohamed P1 3 4 P5 9 P4 P2 13 17 19 Lecture 04: CPU Scheduling CS 206: Operating Systems ▪ _______ Turn Around Time (TAT) = Completion time (CT) – Arrival time (AT) Solution: ▪ Waiting Time (WT) = Turnaround time (TAT) – Burst time (BT).

The formula for Waiting Time (WT) in CPU scheduling is Turnaround time (TAT) – Burst time (BT). Average _______ Time = Turnaround Time / # of processes.

In the context of CPU scheduling, the purpose of calculating Turn Around Time (TAT) is to measure the time taken from _______ to completion of a process.