CPU Scheduling Algorithms

Enter processes, pick an algorithm, and see the schedule, the metrics and how every process moves between states.

Setup

Process Priority Arrival Bursts (CPU, IO, CPU, …)
How ties and switches are handled
  • Ties go to the lower process ID; in preemptive mode a tie preempts the running process.
  • Burst-based algorithms compare the total CPU burst time.
  • Waiting time is turnaround minus CPU time, so time spent in IO counts as waiting.
  • In preemptive mode the next process is chosen before the context switch starts.
  • No context switch is counted at the very start or end.

Results show up here after you press Calculate.