Assume that execution starts immediately at time 0 and there is no context switch overhead. Draw a time diagram showing the execution of the above processes and calculate the average turnaround time and average waiting time based on the following CPU scheduling algorithms.
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(i) Preemptive priority (Assume that the process with the lower process priority number goes first)
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- Assignment Scheduling Given the following processes. Process Burst Time P1 17 P2 5 P3 12 Using Round Robin (RR) scheduling with time quantum q=4, What is the average turnaround time?Suppose there are five processes, their arrival time and running time are listed as follows. Adopt FCFS and SJF, respectively, give the schedule order and average waiting time. Give the schedule order of SJF. Compute the average waiting time of SJF. Process Arrival time Running time P1 P2 P3 P4 0 3 4 5 3 10 6 1Given 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?
- Describe a process that allows an operating system to enforce limited capability transfers. That is, process A may pass a capability to process B, but process A does not want process 8 to transfer the capability to any other processes. A overview of the activities to be performed by A and B, as well as the activities performed by and details stored by the operating system, should be included in your design.Process synchronization 1. Suppose the initial value of semaphore s is s = 1. What will be the value of the semaphore if the wait (s) operation is executed 3 times and the signal (s) operation is executed once? How many deadlocked processes will remain after that? Justify your answers. [0.75 +1.25=2.0 credits]Describe a process that allows an operating system to enforce limited capability transfers.That is, process A may pass a capability to process B, but process A does not want process B to transfer the capability to any other processes.A overview of the activities to be performed by A and B, as well as the activities performed by and details stored by the operating system, should be included in your design.
- Assignment Scheduling Given the following processes. Process Burst Time P1 17 P2 5 P3 12 Using Round Robin (RR) scheduling with time quantum q=4, What is the average waiting time?In the event of an impasse, it becomes necessary to terminate said processes, thereby leading to the subsequent consequences:limits the number of times that other processes allowed to enter their critical sections after a process has made a request to enter its critical section and before that request is granted: O Busy waiting O Mutual exclusion Bounded waiting O Spinlock
- Consider four periodic tasks (T1, T2, T3 and T4) with the following arrival times, computation times, deadlines and priority, in Table Q1. Tasks T1 T2 T3 T4 Executing Fixed Priority Very high High Low Very low Table Q1 Arrival time 7 5 1 0 Preempted Computation Deadline times 3 5 7 5 15 9 15 15 Blocked Draw timeline diagrams to show the execution of the following scheduling policies. In each timeline show the three situations: executing, preempted and blocked, when appropriate using the legend given in Table Q1. i. Non-Preemptive fixed-priority scheduling ii. Preemptive fixed-priority scheduling iii. Earliest Deadline First (EDF) schedulingSchedule the following single-instance processes, all ready at time 0, using the earliest-deadline first (EDF) scheduler. Show the schedule from time 0 to 50. (c is the computation time, d is relative deadline). task 1: c = 3, d = 15; task 2: c = 14, d = 46; task 3: c = 2, d = 16. Suppose there is a new process 4 with d= 17. What is the maximum value of the computation time of process 4 in order for it to be EDF-schedulable together with the original 3 processes (that is, all processes meet their deadlines). Justify.Note: this question is related from operating system subject. Q: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