Lottery Scheduling

Key Concepts

• Instead of assigning a fixed priority to each process, lottery scheduling assigns tickets to each process.
  • Process with more tickets has a high probability of being selected
• Tickets are distributed among processes based on their desired share of resources
• Scheduler selects a winning ticket randomly, and the process holding that ticket gets the resource for a specified period

Flexibility and Fairness

• Allows processes to influence their chances of obtaining resources by acquiring or relinquishing tickets
• All processes have a chance to win the lottery, ensuring fairness

Advantages

• Provides better responsiveness and adaptability in a multi-user environment compared to Round Robin Scheduling
• Supports proportional-share resource allocation