An operating system follows a variable memory partitioning model. The system keeps track of empty blocks in a linked list in the order of their address, where each node stores the size of next empty block in the memory. Say that current state of the memory is hold by the linked list shown below, which tells that there are currently four empty blocks in the memory, and the size of first block is 12 byte etc.

An operating system follows a variable memory partitioning model. The system keeps track of empty blocks in a linked list in the order of their address, where each node stores the size of next empty block in the memory. Say that current state of the memory is hold by the linked list shown below, which tells that there are currently four empty blocks in the memory, and the size of first block is 12 byte etc.

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter3: Data Representation

Section: Chapter Questions

Problem 13RQ: How is an array stored in main memory? How is a linked list stored in main memory? What are their...

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A disk drive has 24 cylinders (0-23). Initially, the head points to cylinder 8 (moving towards cylinder 0). For C-SCAN and C-LOOK, requests are serviced while the head is moving from inner cylinder (0) to outer cylinder (23). You must count also the cylinders when the head is moving without servicing. The following requests are in the queue (where the requests arrival is from left to right): 11 - 3- 17 - 4 - 10 - 12 - 8 - 9 - 22 - 13. What is the total head movements using the following scheduling algorithms: a) FCFS: b) C-SCAN: c) SSTF: d) C-LOOK:
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Programming language: Java Topic: linked list
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