26 )The following processes are submitted to an operating system. which require no input/output (i.e. they are always ready to utilize the CPU) 1. Draw Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, Preemptive and non preemptive SJF, preemptive and nonpreemptive priority, Highest response ratio next (HRRN), and RR (quantum-2). 2. What is the average turnaround time average waiting time, schedule length, and throughput of each process for each of the scheduling algorithms in part 1? 3. Which of the algorithms results in the minimum average waiting time (over all processes)? ( 1. FCFS PID AT BT CT TAT WT P1 0 S P2 2 6 P3 2 1 P4 1 9 P5 3 3 Gantt Chart: . 2. Non-Preemptive SJF PID PI P2 P3 P4 P5 . AT BT CT TAT 0 8 6 1 9 3 Gantt Chart: Pl P2 P3 2 2 3. Preemptive SJF PID AT . 1 3 BT CT TAT 0 S 2 6 1 2 P4 1 9 P5 3 3 Gantt Chart: WT WT . . . . . . Average Turnaround Time- Average Waiting time = ScheduleLength Throughtput- Average Turnaround Time= Average Waiting time- Schedule Length= Throughput Average Turnaround Time Average Waiting time- Schedule Length= Throughtpat-

26 )The following processes are submitted to an operating system. which require no input/output (i.e. they are always ready to utilize the CPU) 1. Draw Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, Preemptive and non preemptive SJF, preemptive and nonpreemptive priority, Highest response ratio next (HRRN), and RR (quantum-2). 2. What is the average turnaround time average waiting time, schedule length, and throughput of each process for each of the scheduling algorithms in part 1? 3. Which of the algorithms results in the minimum average waiting time (over all processes)? ( 1. FCFS PID AT BT CT TAT WT P1 0 S P2 2 6 P3 2 1 P4 1 9 P5 3 3 Gantt Chart: . 2. Non-Preemptive SJF PID PI P2 P3 P4 P5 . AT BT CT TAT 0 8 6 1 9 3 Gantt Chart: Pl P2 P3 2 2 3. Preemptive SJF PID AT . 1 3 BT CT TAT 0 S 2 6 1 2 P4 1 9 P5 3 3 Gantt Chart: WT WT . . . . . . Average Turnaround Time- Average Waiting time = ScheduleLength Throughtput- Average Turnaround Time= Average Waiting time- Schedule Length= Throughput Average Turnaround Time Average Waiting time- Schedule Length= Throughtpat-

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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Process Scheduling: Select all statements below that are true Dynamic Priority Round Robin (DPRR) makes use of a preliminary stage containing prioritized queues. When Multilevel feedback (MLF) scheduling is applied, processes at lower priority levels can take more processor time than processes at higher levels. Multilevel Priority (ML) scheduling is based on priority queues and uses a fixed set of priorities. When Multilevel Feedback (MLF) scheduling is applied, processes do not remain at the same priority level, but gradually migrate to lower levels each time they use up their allotted time threshold. Priority Inversion means that low-priority processes can be delayed or blocked by higher-priority processes.
Let the processes P1, P2, P3, and P4 be given. They arrive in the system at the same time in this order. The processes have the following service times (in time units): Process Service time (CPU burst) P1 53 P2 17 P3 68 P4 24 2) For the scheduling method "Round Robin" (RR), specify the average execution time (average turnaround time) and the number of context switches. The time quantum q is set to 20 time units. You must show your calculations. You will not have to draw Gantt charts. Note: For RR, processes execute in order of their ID (i.e., P1-P2-P3- P4).
Q6 )The following processes are submitted to an operating system. They are calculation processes which require no input/output (i.e. they are always ready to utilize the CPU) 1. Draw Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, Preemptive and non preemptive SJF, preemptive and nonpreemptive priority, Highest response ratio next (HRRN), and RR (quantum = 2). 2. What is the average turnaround time average waiting time, schedule length, and throughput of each process for each of the scheduling algorithms in part 1? 3. Which of the algorithms results in the minimum average waiting time (over all processes)? ( 1. FCFS PID AT BT 0 P1 8 P2 6 P3 P4 P5 Pl P2 P3 2. Non-Preemptive SJF PID AT BT CT TAT 0 8 2 2 1 1 9 3 3 Gantt Chart: 6 1 P4 1 9 P5 3 3 Gantt Chart: . 2 . 2 3. Preemptive SJF PID PL P2 P3 1 P4 1 9 PS 3 3 Gantt Chart: BT 0 8 12 6 AT 2 CT TAT WT CT ΤΑΊ WT WT Average Turnaround Time- Average Waiting time = Schedule Length-…
Computer Science A multiprogrammed system with a single CPU has a very large number of CPU boundprocesses running on it that all have the same priority. Could you think of a CPU schedulingalgorithm that would combine the lowest possible response times with the highest possiblethroughput and no starvation
Please Implement in C programming Language Given the list of processes, their CPU burst times, arrival times, and priorities implement the Priority scheduling algorithm on the processes with preemption. Compute and print the completion Time(CT), Turnaround Time(TAT), and Waiting Time(WT) for each process using C Programming. Waiting time: Processes need to wait in the process queue before execution starts and in execution while they get preempted. Turnaround time: Time elapsed by each process to get completely served. (Difference between submission time and completion time).
Write the process scheduling of the following Scenario
Let the processes P1, P2, P3, and P4 be given. They arrive in the system at the same time in this order. The processes have the following service times (in time units): P2 17 Process Service time (CPU burst) P1 53 P3 68 P4 24 For the scheduling method "Shortest Job First" (SJF), specify the execution order of the processes, the average execution time (average turnaround time) and the average waiting time over all processes. You must show your calculations. You will not have to draw Gantt charts.
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Please Implement in C programming Language Given the list of processes, their CPU burst times, arrival times, and priorities implement the SJF scheduling algorithm on the processes with preemption. Compute and print the completion Time(CT), Turnaround Time(TAT), and Waiting Time(WT) for each process using C Programming. Waiting time: Processes need to wait in the process queue before execution starts and in execution while they get preempted. Turnaround time: Time elapsed by each process to get completely served. (Difference between submission time and completion time). Task 1: SJF Scheduling with preemption You can use the following input as a sample:
2. Write programs in eitherCor Java or python (choose your preference ) to simulate the following scheduling Algorithms with their respective Gantt Charts displayed during run time: (i) FCFS- First Come First Serve Scheduling (ii) SJF- Shortest Job First Scheduling (Non - Preemptive and Pre-emptive both) (iii) LJB-Longest Job First Scheduling (Non - Preemptive and Pre-emptive both) (iv) Priority Scheduling (Non - Preemptive and Pre-emptive both)
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