What is a disadvantage of the SSTF scheduling algorithm?
Table of Contents
- 1 What is a disadvantage of the SSTF scheduling algorithm?
- 2 What is the risk involved in using the SSTF disk scheduling algorithm?
- 3 Which disk scheduling algorithm is better in what situation?
- 4 Which of the following disk scheduling techniques has a drawback of starvation?
- 5 Why Sstf disk scheduling algorithm is better than FCFS scheduling algorithm provide examples?
- 6 Which algorithm is better Sstf or look?
- 7 What is the difference between FCFS and SSTF?
- 8 What is SSTF algorithm?
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.
What is the risk involved in using the SSTF disk scheduling algorithm?
What is the risk involved in using the SSTF disk scheduling algorithm? the problem occurs when both the disk controller and the host operation system both uses it, causing conflict scheduling. What are the advantages and disadvantages of caching disk writes? It can give better performance.
Is SSTF optimal?
Although, SSTF is not optimal, it is faster than the other 3 because it services the closest request first.
What is SSTF scheduling in disk scheduling?
SSTF is abbreviation of Shortest Seek Time First (SSTF) which is a disk scheduling algorithm. It selects the request which is closest to the current head position before moving the head away to service other requests. This is done by selecting the request which has the least seek time from the current head position.
Which disk scheduling algorithm is better in what situation?
So the disk scheduling algorithm that gives minimum average seek time is better. Rotational Latency: Rotational Latency is the time taken by the desired sector of disk to rotate into a position so that it can access the read/write heads. So the disk scheduling algorithm that gives minimum rotational latency is better.
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 |
Why SSTF disk scheduling algorithm is better than FCFS scheduling algorithm provide examples?
FCFS provides more average waiting time and response time….Difference between FCFS and SSTF disk scheduling algorithm :
| FCFS SCHEDULING ALGORITHM | SSTF SCHEDULING ALGORITHM | |
|---|---|---|
| 1. | FCFS is not efficient in seek movements. | SSTF is very effective/efficient in seek movements. |
| 2. | It results in increased total seek time. | It reduces the total seek time as compared to FCFS. |
Why is disk scheduling required?
Disk scheduling is important because: Multiple I/O requests may arrive by different processes and only one I/O request can be served at a time by the disk controller. Thus other I/O requests need to wait in the waiting queue and need to be scheduled.
Why Sstf disk scheduling algorithm is better than FCFS scheduling algorithm provide examples?
Which algorithm is better Sstf or look?
SSTF stands for Shortest Seek Time First….Difference between SSTF and LOOK disk scheduling algorithm :
| LOOK SCHEDULING ALGORITHM | SSTF SCHEDULING ALGORITHM | |
|---|---|---|
| 1. | The performance of LOOK is better than SSTF. | SSTF lags in performance. |
| 2. | LOOK results in increased total seek time. | It reduces total seek time as compared to LOOK. |
What is Sstf program?
Shortest seek time first (SSTF) algorithm selects the disk I/O request which requires the least disk arm movement from its current position regardless of the direction. It reduces the total seek time as compared to FCFS. It allows the head to move to the closest track in the service queue.
Which algorithm is better SSTF or look?
What is the difference between FCFS and SSTF?
FCFS: FCFS is the simplest of all the Disk Scheduling Algorithms. In FCFS, the requests are addressed in the order they arrive in the disk queue.Let us understand this with the help of an example. SSTF: In SSTF (Shortest Seek Time First), requests having shortest seek time are executed first.
What is SSTF algorithm?
SSTF stands for Shortest Seek Time First. This algorithm services that request next which requires least number of head movements from its current position regardless of the direction. It breaks the tie in the direction of head movement.
What is shortest seek time first (SSTF)?
Shortest Seek Time First (SSTF) – Basic idea is the tracks which are closer to current disk head position should be serviced first in order to minimise the seek operations. Advantages of Shortest Seek Time First (SSTF) – Better performance than FCFS scheduling algorithm.
Which tracks should be serviced first in disk scheduling algorithm?
Basic idea is the tracks which are closer to current disk head position should be serviced first in order to minimise the seek operations. Better performance than FCFS scheduling algorithm.