Question

For each of the disk scheduling algorithms FCFS, SSFT, SCAN, C-SCAN, LOOK, C-LOOK, find out the resulting sequence and total head movement, for the following request queue (0-199). Assume previous request was at 100 and currently head pointer is servicing most recent request at 96: 26, 119, 86, 147, 107, 2, 136 Algorithm FCFS SSFT SCAN C-SCAN LOOK C-LOOK Sequence Total Head Movement

          For each of the disk scheduling algorithms FCFS, SSFT, SCAN, C-SCAN, LOOK,
C-LOOK, find out the resulting sequence and total head movement, for the
following request queue (0-199). Assume previous request was at 100 and
currently head pointer is servicing most recent request at 96:
26, 119, 86, 147, 107, 2, 136
Algorithm
FCFS
SSFT
SCAN
C-SCAN
LOOK
C-LOOK
Sequence
Total Head
Movement

For each of the disk scheduling algorithms FCFS, SSFT, SCAN, C-SCAN, LOOK,
C-LOOK, find out the resulting sequence and total head movement, for the
following request queue (0-199). Assume previous request was at 100 and
currently head pointer is servicing most recent request at 96:
26, 119, 86, 147, 107, 2, 136
Algorithm
FCFS
SSFT
SCAN
C-SCAN
LOOK
C-LOOK
Sequence
Total Head
Movement

Added by Evan V.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Tanvi Garg

Step 1

- **SSTF (Shortest Seek Time First)**: Selects the request closest to the current head position. - **SCAN (Elevator Algorithm)**: Moves the head towards one end of the disk, servicing requests along the way, then reverses direction at the end. - **C-SCAN (Circular Show more…

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For each of the disk scheduling algorithms FCFS, SSTF, SCAN, C-SCAN, LOOK, C-LOOK, find out the resulting sequence and total head movement for the following request queue (0-199). Assume the previous request was at 100 and currently, the head pointer is servicing the most recent request at 96: 26, 119, 86, 147, 107, 2, 136 Total Head Movement Algorithm Sequence FCFS SSTF SCAN C-SCAN LOOK C-LOOK