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Apply the following disk scheduling algorithm starting track at 90. i) FCFS ii) SSTF iii) C-SCAN
written 7.3 years ago by gravatar for priyad84 priyad84 • 350 modified 3.3 years ago by gravatar for binitamayekar binitamayekar ★ 6.7k

Subject: Operating System

Topic: File Management

Difficulty: High

The requested tracks in the order received are - 54, 57, 40, 20, 80, 120, 150, 45, 180. Apply the following ##disk scheduling algorithm starting track at 90.

i) FCFS

ii) SSTF

iii) C-SCAN
operating systems
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written 3.3 years ago by gravatar for binitamayekar binitamayekar ★ 6.7k

First Come First Serve (FCFS) Disk Scheduling

FCFS

Total Head Movements

= (90 - 54) + (57 - 54) + (57 - 40) + (40 - 20) + (80 - 20) + (120 - 80) + (150 - 120) + (150 - 45) + (180 - 45)

= 36 + 3 …

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