Round Robin Scheduling

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Priority Schedulin in Operating System Kernel Function Operating System

What is Round Robin Scheduling

In the Round Robin scheduling algorithm, the OS defines a time quantum (slice). All the processes will get executed in the cyclic way. Each of the process will get the CPU for a small amount of time (called time quantum) and then get back to the ready queue to wait for its next turn. It is a preemptive type of scheduling.

round robin scheduling

Round Robin Scheduling

  • Round Robin is the preemptive process scheduling algorithm.
  • Each process is provided a fix time to execute, it is called a quantum.
  • Once a process is executed for a given time period, it is preempted and other process executes for a given time period.
  • Context switching is used to save states of preempted processes

Advantage of Round Robin Scheduling

  • It can be actually implementable in the system because it is not depending on the burst time.
  • It doesn't suffer from the problem of starvation or convoy effect.
  • All the jobs get a fare allocation of CPU.

Disadvantages of Round Robin Scheduling

  • The higher the time quantum, the higher the response time in the system.
  • The lower the time quantum, the higher the context switching overhead in the system.
  • Deciding a perfect time quantum is really a very difficult task in the system.

Priority Schedulin in Operating System Kernel Function Operating System

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