What is the problem with FCFS scheduling with disks?

The disadvantages of FCFS disk scheduling algorithm are: FCFS scheduling is not offered as the best service. In FCFS, scheduling disk time is not optimized.

Which disk scheduling may lead to starvation?

Reason: SSTF disk scheduling method is most likely to lead to starvation for requests on inner or outer cylinders. 26.

Which scheduling leads to starvation?

Explanation: Shortest job next may lead to process starvation for processes which will require a long time to complete if short processes are continually added.

What are different advantages and disadvantages of FCFS?

Short jobs(process) may have to wait for long time. Important jobs (with higher priority) have to wait. cannot guarantee good response time. average waiting time and turn around time is often quite long.

What is a disadvantage of the SSTF scheduling algorithm?

What is a disadvantage of the SSTF scheduling algorithm? SSTF may cause starvation of some requests. If a continual stream of requests arrives near one another, a request of a cylinder far away from the head position has to wait indefinitely.

Does FCFS cause starvation?

In First Come First Serve(FCFS) if a process with a very large Burst Time comes before other processes, the other process will have to wait for a long time but it is clear that other process will definitely get their chance to execute, so it will not suffer from starvation.

What is FCFS disk scheduling?

FCFS is the simplest disk scheduling algorithm. As the name suggests, this algorithm entertains requests in the order they arrive in the disk queue. The algorithm looks very fair and there is no starvation (all requests are serviced sequentially) but generally, it does not provide the fastest service.

Does FCFS lead to starvation?

FCFS can never suffer from starvation because it services requests based on Arrival Time. The request which comes first is served first.

Can starvation occur in preemptive scheduling?

Yes, pre-emptive scheduling may cause starvation. Let’s see Longest remaining time first scheme. It is pre-emptive scheduling. At any point of time, if any process having larger execution time or larger remaining time arrives, processor will switched to that process pausing current ongoing process.

Does FCFS have starvation?

FCFS can never suffer from starvation because it services requests based on Arrival Time.

Which of the following disk scheduling techniques has a drawback of starvation?

Discussion Forum

Que.	Which of the following disk scheduling techniques has a drawback of starvation?
b.	SSTF
c.	FCFS
d.	LIFO
	Answer:SSTF

Which of the following scheduling algorithms may cause starvation I first come first served II Round Robin III Priority IV shortest job first V shortest remaining time first?

Discussion Forum

Que.	Which of the following scheduling algorithms may cause starvation? a. First-come-first-served b. Round Robin c. Priority d. Shortest process next e. Shortest remaining time first
b.	c, d and e
c.	b, d and e
d.	b, c and d
	Answer:c, d and e

What is FCFS disk scheduling algorithm?

In the FCFS disk scheduling algorithm, each input/output request is served in the order in which the requests arrive. In this algorithm, starvation does not occur because FCFS address each request. The advantages of FCFS disk scheduling algorithm are:

What are the limitations of FCFS?

FCFS being a nonpreemptive scheduling algorithm, the short processes which are at the back of the queue have to wait for the long process at the front to finish The throughput of FCFS is not very efficient.

What is the simplest disk scheduling algorithm?

What is the first come first serve scheduling algorithm?

First Come First Serve (FCFS) FCFS is the simplest disk scheduling algorithm. As the name suggests, this algorithm entertains requests in the order they arrive in the disk queue. The algorithm looks very fair and there is no starvation (all requests are serviced sequentially) but generally, it does not provide the fastest service.