Consider the following four processes represented as process, Arrival time. Burst time) with the length of Cpu burst in millisecond {(P1, 0, 10), (P2,1,7), (P3, 2, 13), (P4, 3,11). Using preemptive SJF Scheduling (1) Draw Gantt chart Ans:- (ii) Calculate average waiting time Ans:-
Q: Consider the following set of processes, with the length of the CPU burst given in seconds:…
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- 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)Fill in blank Suppose that there is only one CPU and we have three processes P1, P2, P3 arrived for execution at time 0, 1, 2 respectively. Their burst time are 8, 5, 2 respectively. None of these processes will perform I/O operations. Consider non-preemptive scheduling. With the FCFS scheduling algorithm, the average turnaround time of these processes will be----- and the average response time will be ------ With the SJF scheduling algorithm, the average turnaround time of these processes will be ----- and the average response time will be -----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.
- 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).3. Job Scheduling: Consider the problem of scheduling n jobs of known durations t1, t2, ..., tn, for execution by a single processor. The jobs can be executed in any order, one job at a time. You want to find a schedule that minimizes the total time spent by all the jobs in the system. (The time spent by one job in the system is the sum of the time spent by this job in waiting plus the time spent on its execution.) Design a greedy algorithm for this problem. Does the greedy algorithm always yield an optimal solution?Given the list of processes, their CPU burst times, arrival times and priorities implement SJF,Priority and Round Robin scheduling algorithms on the processes with preemption. For each ofthe scheduling policies, 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 inexecution while they get preempted. Turnaround time: Time elapsed by each process to get completely served. (Difference betweensubmission time and completion time).
- In a timesharing OS we have the following cpu timeline for two tasks X and Y. The timeslice is 1s.Both tasks are available in the system at the same time t=9:00:00.000 and order of arrival is the obviousX followed by Y. (The decimals reflect milliseconds if they showup in an indicated time reference.) There are no other processes (tasks) in the system other than X,Y. 1234567890 XYXYX--YXY The time line 1 indicates that at t=9:00:00s task X starts its execution and when t=9:00:01s is reached task Y takes over. The time line 1 indicates the 'first second' and time line 0 indicates the 'tenth second' above.Task Y completes its execution at t=9:00:10s, the completion of the tenth second since X started its execution. Task X has completed its execution earlier. (a) What is the total number of context switches starting from prior to t=9:00:00s (e.g. t=8:59:59.999) through thecompletion of $Y$? answer is 16s (b) What is the turnaround time for Y? answer is 10s (c) What is…Transcribed Image Text Consider the following set of processes, with arrival times and the length of the CPU burst time given in milliseconds. a. Draw a Gantt chart that illustrates the execution of these processes using the Shortest-Remaining Time First (SRTF) scheduling algorithm. b. Give the average waiting time of Shortest-Remaining Time First (SRTF) scheduling algorithm. Note: Preempted processes are added to the end of the ready queue. Process Arrival Time Burst Time A 4 B 1 3 1 D 3 4 3Problem 4 There are two approaches for scheduling tasks on multiprocessor platform: the partitioned approach and the global approach. The table below shows Ci (WCET) and Ti (period) for six periodic tasks to be scheduled on m = 3 processors. The relative deadline of each periodic task is equal to its period. T T1 10 T2 10 25 T3 12 30 T4 10 T5 8. 20 T6 7 100 The task set is schedulable using rate-monotonic partitioned scheduling algorithm. Show how the task set is partitioned on m = 3 processors so that all the deadlines are met?
- Q1.Applying "Multilevel Queue Fixed priority" scheduling algorithm, draw the CPU scheduling Gantt chart and calculate the waiting time and turnaround time for the following processes: Queue Process Burst Time (ms) Algorithm Priority 1 P1 53 Round Robin quantum: 20 P2 17 P3 42 Priority 2 Р4 30 FCFS P5 20NOTE: "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 8msApply the following CPU scheduling algorithms and be able to compare the output based on the following parameters identified below. CPU scheduling algorithms: 1 First-Come First-Serve Scheduling, FCFS. 2 Shortest-Job-First Scheduling, SJF. 3 Priority Scheduling. 4 Round Robin Scheduling. ... Job Arrival Time Burst Time Priority J1 0 5 1 J2 1 3 2 J3 2 2 3 J4 3 6 4 J5 4 4 5 Use this parameters with each CPU scheduling: CPU utilization Throughput Turn-around time of each job Turn-around time Average Waiting time of each job Waiting time Average Response time Answer and explain the following questions: What scheduling system is the best performer? Define your parameters or attributes or basis in selecting the best performer CPU Scheduling system. What scheduling system needs enhancement/improvement. Explain the needed improvements based on your parameters/attributes/basis. What additional parameters or attributes…