Computer Science Illuminated
Computer Science Illuminated
7th Edition
ISBN: 9781284155617
Author: Nell Dale, John Lewis
Publisher: Jones & Bartlett Learning
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Chapter 11, Problem 2TQ

Explanation of Solution

CPU scheduling algorithm” is another algorithm which is discussed in this context.

Explanation about the CPU scheduling:

The act of moving a process from “ready” state to “running” state in a process life cycle is called CPU scheduling.

  • Scheduling is the action which gives access to the system resource by CPU to threads, processes, or data flows.
  • This is done by various scheduling algorithms, which decide the process that should be given execution time inside the processor, in which the process should be moved from the ready state to running state.

Types of scheduling algorithms with explanation:

  • First-come, First-served:
    • First-come-first-served (FCFS) is the simplest scheduling algorithm.
    • Processes are dispatched to the CPU according to their arrival time in the “running” state.
  • Shortest job next:
    • The processor looks at all processes in the ready state and the process that has little execution time will be taken for execution...

Explanation of Solution

Similarity:

There is no similarity between the disk scheduling and CPU scheduling algorithm.

Reason:

Because, disk scheduling is a technique which is done by operating system to decide which process has to be executed first whereas CPU scheduling is another technique which permits one process to use the CPU while execution of another process is in waiting state because of inadequate resource.

Difference between disk scheduling and CPU scheduling algorithm:

Disk scheduling algorithmCPU scheduling algorithm
In a computer, multiple processes run over the same time. To handle this multiple processes, the operating system decides which process has to be executed first. This technique is called as disk scheduling.The act of moving a process from ready state to running state in a process life cycle is called CPU scheduling...

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