disk scheduling algorithms.pptx

disk scheduling algorithms

1. DISK SCHEDULING ALGORITHM 2023EV083 ASSIGNMENT SERIES - 71

2. DISK SCHEDULING As we realize that on a solitary PC we can Perform Numerous Tasks all at once so the executives are likewise fundamental on every one of the Running Cycles that are running on the framework at a time. With the assistance or Coming of the Multiprogramming we can Execute Many Projects all at once. So for Controlling and giving the Memory to every one of the Cycles Working Framework utilizes the Idea of Plate Booking.

3. TYPES OF DISK SCHEDULING

4. FCFS ALGORITHM It means 'the early bird gets the worm'. As the name recommends, the solicitation which starts things out will be handled first, etc. The solicitations coming to the plate are organized in a legitimate succession as they show up. Since each solicitation is handled in this calculation, there is zero chance of 'starvation'.

5. SSTF ALGORITHM SSTF is a shortened form of Most brief Look for Time First (SSTF) which is a circle booking calculation. This is finished by choosing the solicitation which has the least look for time from the ongoing head position. This calculation has less 'look for time' when contrasted with FCFS Calculation.

6. SCAN ALGORITHM It is additionally called Lift Calculation. In this calculation, the circle arm moves into a specific heading till the end, fulfilling every one of the solicitations coming in its path, and then it turns back and moves in the converse course fulfilling demands coming in its way. After that, it reverses its direction and starts to scan again the requests in its path and serves them.

7. C - SCAN ALGORITHM It means "Roundabout Output". This calculation is practically equivalent to the Output plate calculation however one thing that makes it different is that 'in the wake of arriving at the one end and turning around the head course, it begins to return. Subsequent to arriving at the finish of the plate it inverts its course and again begins to move to the opposite finish of the circle yet while returning it serves no solicitations.

8. THE END