Priority Scheduling Notes

Priority Scheduling

• Priority Queuing: Arriving traffic is classified and then queued based on its class. Any header fields can be used for this classification.

• Scheduling Policy: Packets are sent from the highest priority queue that has buffered packets. Within each priority class, packets are typically handled using First-Come, First-Served (FCFS) scheduling.

• Components:

  • Arrivals: Packets arriving at the system.
  • Classification: Packets are classified into different priority queues (e.g., high priority queue, low priority queue).
  • Service: Packets are serviced (sent) from the queues based on their priority.
  • Departures: Packets departing after being serviced.