Consider the following set of processes, with the length of the CPU burst given in milliseconds. In the last column, O denotes the highest priority whereas 2 denotes the lowest priority level. Process Arrival Time (ms) Burst Time (ms) Priority P1 0 10 2 P2 3 3 1 P3 2 0 P4 5 3 0 P5 6 5 1 Draw three Gantt charts that illustrate the execution of these processes using FCFS, preemptive Shortest Job First (SJF), and priority scheduling with round robin (quantum = 2) scheduling algorithms. The preemptive SJF does not use the priority to make its decision. **To avoid confusion here: If a process of highest priority is currently scheduled, 4 نا نا

Consider the following set of processes, with the length of the CPU burst given in milliseconds. In the last column, O denotes the highest priority whereas 2 denotes the lowest priority level. Process Arrival Time (ms) Burst Time (ms) Priority P1 0 10 2 P2 3 3 1 P3 2 0 P4 5 3 0 P5 6 5 1 Draw three Gantt charts that illustrate the execution of these processes using FCFS, preemptive Shortest Job First (SJF), and priority scheduling with round robin (quantum = 2) scheduling algorithms. The preemptive SJF does not use the priority to make its decision. **To avoid confusion here: If a process of highest priority is currently scheduled, 4 نا نا

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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Consider the following set of processes (a smaller priority number implies a higher priority). The processes are assumed to have arrived in the order P1, P2, P3, P4, P5 all at time 0. Process Priority Burst Time P1 1 20 P2 3 25 P3 4 25 P4 2 15 P5 5 30 Draw four Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, SJF (if two jobs have the same burst time, schedule them following priority), and non-preemptive priority.
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Consider the following set of processes (arriving in the order Pi, P2, P3, P4, Ps, all at time 0): Burst time Process Priority (msec) 9. 2 P1 P2 P3 P4 Ps 1 1 2 2 3 4 5 3 Note that a smaller priority number implies a higher priority. Draw a timeline (Gant Chart) illustrating the sequence of process executions for the above processes using: i. First Come First Serve (FCFS) ii. Shortest Job First (SJF)
Q1. Consider the following set of processes, with the length of the CPU-burst time given in milliseconds: Process P1 P2 P3 P4 Ps Burst Time Priority 10 1 1 3 1 4 2 a. Draw four Gantt charts illustrating the execution of these processes using FCFS, SJF, a non-preemptive priority (a smaller priority number implies a higher priority), and RR (quantum= 1) scheduling. b. What is the turnaround time of each process for each of the scheduling algorithms in part a? c. What is the waiting time of each process for each of the scheduling algorithms in part а? d. Which of the schedules in part a result in the minimal average waiting time (over all processes)?
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Consider the following set of processes, with the length of the CPU-burst time given in milliseconds: Process Arrival Time Burst time TTT P1 7 P2 2 4 P3 4 1 P4 4 4 P5 5 6 1) Draw Gantt charts illustrating the execution of these processes using FCFS, SJF, and RR (quantum = 1) scheduling. 2) What is the turnaround time of each process for each of the scheduling algorithms? 3) What is the waiting time of each process for each of the scheduling algorithms? 4) Which of the schedules results in the minimal average waiting time (over all processes)? 3.
Consider the following set of four processes. Their arrival time and time to require completing the execution are given in the following table. Consider all times in milliseconds. Implement the SJF algorithm on given chart. Process Arrival Time (T0) Time required for completion (CPU Burst Time) P0 0 10 P1 1 6 P2 3 2 P3 5 4
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Consider the following table of set of processes, assumed to have arrived at time 0 in the order P1, P2, P3, P4, P5, with the length of the CPU burst given in milliseconds. Process P1 P2 P3 P4 P5 CPU burst time 8 1 2 1 5 2. Non-Preemptive Priority. 3. RR (Time Quantum = 6). Priority 5 1 3 4 2 a. Design the flow of processes in a Gantt chart using each of the following algorithms: 1. FCFS.