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Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:
- a)360 ms
- b)212 ms
- c)848 ms
- d)876 ms
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Let disk request come to a disk driver for cylinders in the order 10, ...
Problem: Find the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) for disk requests 10, 22, 20, 2, 40, 6, and 38, starting from cylinder 20 with a seek time of 6 ms per cylinder.
Solution:
FCFS Algorithm: In FCFS scheduling algorithm, the disk arm moves from its current position to the first requested cylinder and then moves to the second requested cylinder, and so on.
Steps:
Total seek time:
Total seek time = Sum of distances between consecutive cylinders * seek time per cylinder
Total seek time = (10+12+2+18+38+34+32) * 6
Total seek time = 876 ms
Answer: The total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is 876 ms.
Solution:
FCFS Algorithm: In FCFS scheduling algorithm, the disk arm moves from its current position to the first requested cylinder and then moves to the second requested cylinder, and so on.
Steps:
- Starting position: Cylinder 20
- Request 1: Cylinder 10 (distance to move: 10-20=10)
- Request 2: Cylinder 22 (distance to move: 22-10=12)
- Request 3: Cylinder 20 (distance to move: 20-22=2)
- Request 4: Cylinder 2 (distance to move: 20-2=18)
- Request 5: Cylinder 40 (distance to move: 40-2=38)
- Request 6: Cylinder 6 (distance to move: 40-6=34)
- Request 7: Cylinder 38 (distance to move: 38-6=32)
Total seek time:
Total seek time = Sum of distances between consecutive cylinders * seek time per cylinder
Total seek time = (10+12+2+18+38+34+32) * 6
Total seek time = 876 ms
Answer: The total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is 876 ms.
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Community Answer
Let disk request come to a disk driver for cylinders in the order 10, ...
Data:
Seek time = t = 6 ms per cylinder
Head = 20
Seek time = t = 6 ms per cylinder
Head = 20
Concept:
Since, it is a first-come-first-serve scheduling requests will be served in the given sequence:
10, 22, 20, 2, 40, 6 and 38
Since, it is a first-come-first-serve scheduling requests will be served in the given sequence:
10, 22, 20, 2, 40, 6 and 38
Formula:
Total Seek time = total head movement × t
Total Seek time = total head movement × t
Calculation:
Total head movement = (20 - 10) + (22 - 10) + (22 - 2) + (40 - 2) + (40 - 6) + (38 - 6) =
= 10 + 12 + 20 + 38 + 34 + 32 = 146
Total Seek time = 146 x 6 = 876 ms.
Total head movement = (20 - 10) + (22 - 10) + (22 - 2) + (40 - 2) + (40 - 6) + (38 - 6) =
= 10 + 12 + 20 + 38 + 34 + 32 = 146
Total Seek time = 146 x 6 = 876 ms.
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Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer?
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Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer?.
Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE).
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Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Let disk request come to a disk driver for cylinders in the order 10, 22, 20, 2, 40, 6 and 38, at the time when the disk driver is reading from cylinder 20. If the seek time is 6 ms per cylinder, then the total seek time for the disk arm scheduling time algorithm (FCFS - First Come First Serve) is:a)360 msb)212 msc)848 msd)876 msCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
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