Solve Both Problem A and B. Use the information from A to solve B Consider the following set of processes, with the length of the CPU burst time given in milliseconds:ProcessP1P2P3P4P5Draw the Gantt charts illustrating the execution of these processes using:FCFS•SJF (SPN)SRT•HRRNa nonpreemptive priority (a smaller priority number implies a higher priority).RR (q= 1)RR (q=3)Combining RR (q-2) and priority scheduling.Feedback (q=1)•Feedback (q=2¹)Fill out the following table for each of the scheduling algorithms in part a.ProcessP1Arrival Time0P21P32P43P5CPU Burst Time/Service Time/Arrival TimePriority0Processing Time3215322133344Starting TimeCompletion TimeResponse TimeWaiting TimeTurnaround TimeProblem 2 (40 points)Assume that process Pl has a period of pl 90 and a CPU burst of tl = 35.For process P2, the corresponding values are p2 = 40 and 12 = 20.Draw the Gantt charts till the time 160 illustrating the execution of these processes along with their deadlines using:.Rate-monotonic schedulingEarliest-deadline-first (EDF) schedulingAverage

To solve Problem A, various scheduling algorithms such as FCFS, SJF (SPN), SRT, HRRN, preemptive…

Answered: Consider the following set of…

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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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).
true/false Consider a group of CPU-time sharing processes P1 , P2, ... Pn with CPU burst times of 1,2,...,n units respectively arrive at the same time. The average waiting time of these processes is always less than n2/6 (regardless of scheduling algorithm)
Consider the following set of processes, the length of the CPU burst time given in milliseconds: Process Burst time: P1 6 P2 8 P3 7 P4 3 Assuming the above process being scheduled with the SJF scheduling algorithm: The waiting time for process P1 is 3ms. The waiting time for process P1 is 0ms. The waiting time for process P1 is 16ms. The waiting time for process P1 is 9ms.
NOTE: "Exekveringstid(ms)" means execution time or burst time in milliseconds Assume that a system with a CPU at one time has the following processes queued in the CPU's READY queue: Calculate the waiting time for the seven processes: 1) If FCFS is being used 2) If LRU is being used 3) If RR with time quantum of 8ms
Consider the following set of processes, with the length of the CPU bursts given in milliseconds. The processes are assumed to have arrived in the order P1, P2, P3, P4, P5 all at time 0 Process Burst Time Priority P1 5 3 P2 11 4 P3 12 P4 1 P5 7 2 a. Draw 3 Gantt charts that illustrate the execution of these processes using the following schedulin algorithms. i. FCFS. Non pre-emptive priority with arrival time for P1, P2, P3, P4 and P5 as 0,2,3,4,5 respectively. (A smaller priority number implies a higher priority). SJF with arrival time for P1, P2, P3, P4 and P5 as 1, 2, 3, 4, 5. ii. 292 iii. b. Calculate the average waiting time for FCFS and SJF scheduling algorithms mentioned in the previous question. Show your work?
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) 1. P1 53 P2 17 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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a single process, with execution time of BT time units, is detected by the system that uses Round Robin algorithm with time quantum of QT time units. Every time the time quantum elapses; a contect switch is always performed with CS time units. Assume that the process come at time equal to zero(0) If BT is 25, QT is 10 and CS is 2, what is the Cpu utilization of the system? If BT is 20, QT is 6 and CS is 1 what is the CPU utilization of the system? What is the CPU utilization if BT is equal QT and QT is equal to CS? What is the system's throughput if BT is less than QT? What is the system's turnaround time (TAT) if BT is less than QT?
Consider a computer whose RAM has the following memory partition: 4K, 8K, 20K, 2K. At time T, a snapshot of the process queue is taken and is given below. Queue Head Tail Process PO P1 P2 P3 P4 P5 P6 P7 Memory 2K 14K 3K 6K 6K 10K 7K 20K Usage time 4ms 10ms 2ms 8ms 4ms 1ms 8ms 6ms If the processes are allocated using FCFS algorithm with best-fit memory allocation, calculate the time at which P6 finishes its execution. Assume there is no additional time overhead for allocating these processes.
Consider the following set of processes, with the length of CPU-burst times given in milliseconds: Process Burst Time P1 P2 P3 P4 P5 10 1 2 1 5 The processes have arrived in the order P1, P2, P3, P4 and P5 at a time 0. a) Draw a Gantt chart illustrating the execution of the processes using Shortest Job First and Round Robin (with a time slice of 2milliseconds). b) Calculate the individual wait time for each process and the overall average wait time, for each algorithm. c) Calculate the individual turnaround time for each process and the overall average turnaround time, for each algorithm.
Direction: Draw a Gantt chart showing the execution of CPU for the following processes implementing Round robin (RR) as indicated below. Also, compute the turnaround times (TAT) and waiting times (WT) of all processes using this scheduling algorithm. The quantum time (QT) is set to 6. Question 1 10 pts Write your answers on the spaces provided. Process Burst Time (BT) Arrival time (AT) RR TAT RR WT P1 15 P2 10 5 P3 P4 3 10 P5 5 20
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) exe P1 53 und P2 17 P3 68 P4 all 24 ur ca ulations. TOU arts. 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).

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