Given the real-time processes P1 and P2 with the following values: P1 period =50, deadline =50, and time = 25 P2 period =30, deadline =30, and time = 15 A- What is the scheduling timeline (show up to 100 ms) of processes using the earliest deadline first (EDF) scheduling? Note: Write your answer in the form: process#(time intervals). Ex: P1(0-30) B- What is the waiting time of process P1?

Given the real-time processes P1 and P2 with the following values: P1 period =50, deadline =50, and time = 25 P2 period =30, deadline =30, and time = 15 A- What is the scheduling timeline (show up to 100 ms) of processes using the earliest deadline first (EDF) scheduling? Note: Write your answer in the form: process#(time intervals). Ex: P1(0-30) B- What is the waiting time of process P1?

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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You were given five processes with their arrival time and execution time for each in the table. Process Arrival time Execution time Processes A 0 4 Processes B 2 3 Processes C 3 4 Processes D 5 5 Develop the schedule (time diagram) for the following methods. First-Come-First-Served (FCFS) Round Robin Shortest Process Next (SPN) Assume the length of the time quantum, or slice is 1 (q=1)
By Round Robin (time quantum= 3) show the scheduling order of the processes using a Gantt chart in the following data. Also b) What is the turnaround time for each process? c) What is the waiting time for each process? d) What is the response time for each process? Process Burst Arrival P1 30 0 P2 25 40 P3 20 50 P4 12 75
QUESTION 3: You were given five processes with their arrival time and execution time for each in the table. Process Arrival time Execution time Processes A 0 4 Processes B 2 3 Processes C 3 4 Processes D 5 5 Develop the schedule (time diagram) for the following methods. First-Come-First-Served (FCFS) Round Robin Shortest Process Next (SPN) Assume the length of the time quantum, or slice is 1 (q=1)
There are two methods available for terminating processes and, accordingly, overcoming deadlocks:
Three processes P1, P2 and P3 with related information are given in the following table: Process Burst Time (ms) Arrival Time (ms) P1 50 0 P2 T 30 P3 40 60 T is a positive integer (T>0). Please use a preemptive shortest job first scheduling algorithm to make Gantt charts, and calculate different waiting times of three processes for different cases. Please write a professional perfect solution with sufficient details.
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 P1 P2 P3 P4 Service time (CPU burst) 53 17 68 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.
Question 4 Execute SRT for the following group of processes and complete the following table: Process A B C D E TArrival 0 2 4 6 8 Ts 2 3 5 1 4 TFinish Answer Answer Answer Answer Answer TR Answer Â Answer Â Answer Â Answer Â Answer Â 1. If the process arriving has the same remaining execution time as the process in the CPU, then the process that is using the CPU will have the highest priority.Â 2. If there is no process in the execution state and two or more processes have the shortest remaining time, then you will use the lowest PID criterion (using lexicographical order). Question 5 Execute HRRN for the following group of processes and complete the following table: Process A B C D TArrival 0 2 4 6 Ts 3 5 4 1 TFinish Answer Answer Answer Answer TR Answer Â Answer Answer Answer Â If two or more processes in the ready queue…
Consider the following processes:Process Arrival Time Service Time A 0 4 B 1 3 C 2 3 D 2 2 E 3 1 F 5 3 Show (draw the schedule, x-axis is time, and one row for each CPU) how the aboveprocesses execute over time on a system with 2 CPUs. Compute the average turnaroundtime for all processes and the average utilization for each CPU under each of the following schedulers: (a) FCFS with a single Ready Queue. A process gets scheduled once one of the CPUsis available. When both CPUs are available, we select CPU1. (b) FCFS with a Ready Queue per CPU. Processes A, B, and C go to CPU1 and processesD, E, and F go to CPU2. (c) HRRN with a single Ready Queue. A process gets scheduled once one of the CPUsis available. When both CPUs are available, we select CPU1.
A real-time system executing four different periodic tasks Ti(p,t) is given, with p and t representing the period and the execution time of the task, respectively. Each task's deadline matches its period p. The system is executing the following set of tasks: S = {T1(10,2), T2(4,1), T3(10,3), T4(7,1)}. Is this real-time system schedulable under Rate-Monotonic (RM) scheduling? Is this real-time system schedulable under Earliest Deadline First (EDF) scheduling? Explain your answers using the concept of overall CPU utilization.
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