Consider a system running ten I/O-bound tasks and one CPU-bound task. Assume that the I/O-bound tasks issue an I/O operation once for every millisecond of CPU computing and that each I/O operation takes 10 milliseconds to complete. Also assume that the context switching overhead is 0.1 millisecond and that all processes are long-running tasks. What is the CPU utilization for a round-robin scheduler when: a. The time quantum is 1 millisecond b. The time quantum is 10 milliseconds
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- Consider a system running ten I/O-bound tasks and one CPU-bound task. Assume that the I/O-bound tasks issue an I/O operation once for every millisecond of CPU computing and that each I/O operation takes 10 milliseconds to complete. Also assume that the context-switching overhead is 0.1 millisecond and that all processes are long-running tasks. Describe the CPU utilization for a round-robin scheduler when: a. The time quantum is 1 millisecond b. The time quantum is 10 millisecondsConsider a system running 2 (two) CPU-bound tasks (C1- C2) and 1 (one) I/O-bound tasks (I1). I/O bound task issues an I/O operation (of 10 milliseconds duration) for every 1 millisecond of CPU time. A CPU-bound task issues an I/O operation (of 1 millisecond duration) for every 10 milliseconds of CPU time. A CPU-bound task requires 20 milliseconds of CPU to complete and an I/O-bound task requires 2millisecond of CPU time.• Assume that there is only one I/O device (so multiple I/O requests may have toqueue).• Assume that CPU context switch time is 1 millisecond.• Assume that the ready queue has C1, I1, C2 jobs in that order with C1 at the frontof the queue. There are no jobs in the system at time 0.• Assume FCFS scheduling for both CPU and I/O.Show through Gantt charts (as a table) how the I/O and CPU are allocated and computethe average turnaround times for the CPU-bound and I/O-bound tasks. (Note: Each CPUboundjob ends with an I/O operation which is unusual. But that is okay for…Assuming a Round-Robin Scheduling works with a quantum time of 5, draw the timeline for CPU- and I/Obursts for the following three processes; A, B, C, with their arrival times, execution and I/O times. k=5 m=10 p=3
- Suppose that a multiprogrammed system has a load of N processes with individual execution times of t1, t2, ...,tN. Answer the following questions: a) How would it be possible that the time to complete the N processes could be as small as: maximum (t1, t2, ...,tN)? b) How would it be possible that the total execution time, T > t1+ t2+ ...+tN? In other words, what would cause the total execution time to exceed the sum of individual process execution times?In a multiprocessor system, busy waiting is sometimes tolerated rather than blocking the process. In such an environment if context switch time is S, what is the maximum amount of busy waiting time that may be tolerated when a process gets stuck in spinlock? Justify/explain your answer.Suppose we have a four (4) core processor and all processes are designed to be multi-threaded. Now, like all processors with more than one core, they have the ability to perform multiple tasks at the same time. If there are four (4) with the following CPU and I/O cycles according to the table below, calculate the times for the Priority scheduling process (view image): Where A,B,C,D correspond to A=6, B=3, C=5, D=8.
- Please help Consider a system running ten I/O-bound tasks and one CPU-bound task. Assume that the I/O-bound tasks issue an I/O operation once for every 4 milliseconds of CPU computing and that each I/O operation takes 10 milliseconds to complete. Also assume that the context-switching overhead is 2 milliseconds and that all processes are long-running tasks. Calculate the CPU utilization for a round-robin scheduler when the time quantum is 10 milliseconds (the result should be in the form of percentage, rational expression, or a ratio of two integers, such as 25/88, 81/121).In a multiprogrammed environment with 32MB of RAM where all processes require9MB of unshared RAM and spend 40% of their time in I/O wait, calculate themaximum achievable CPU utilization. If the RAM available is increased by 700%and time spent in I/O wait increases by 100%, calculate how much RAM will remainunused when CPU utilization is just above 99%.Round Robin CPU Scheduling can be implemented to include priorty for the processes. Yanıtınız: True False Yanıtı temizle Gönder
- A process's execution may be preemptively assigned to an I/O queue and then transferred to the CPU when it's ready. There's no telling what may happen if the I/O is suddenly cut off. Is the CPU's burst going to be diminished? How exactly does this hold true?A system has 1 CPU-bound process and 17 10- bound processes. If the 10-bound processes request an issue once for every 1ms of CPU time, and that each 10-bound request takes 7ms. If the context switching time is 100 microseconds. Using Round robin algorithm with a time slice of 20 ms. The percentage CPU usage is? Correct up to 2 decimal placesConsider the following processes and their associated threads running on a multiprocessor system: Process Thread Arrival Time CPU Burst I/O Burst Total CPU Time X X1 0 4 2 11 X2 3 2 4 5 X3 3 2 4 5 Y Y1 5 6 2 14 Y2 5 3 5 7 Z Z1 7 1 1 6 Z2 7 3 2 10 Create a scheduling simulation for these threads on a system with two (2) processors using the First Come First Served (FCFS) algorithm. A thread may migrate from one processor to another if it returns from blocked waiting time and 1) the processor it was running on previously is occupied with other work; and 2) and the other processor is available to execute the thread. If both processors are available when a thread becomes unblocked, it will remain on the processor it was most recently running on. In this simulation, you will be managing a single ready queue that schedules all processes. When two processes arrive in the ready queue at…