Final answer:
The traditional UNIX scheduler is based on a multilevel feedback queue system where processes are organized into priority queues and are scheduled using a round robin algorithm within each queue.
Step-by-step explanation:
The traditional UNIX scheduler uses a multilevel feedback queue to manage processes. This type of scheduler places processes into various priority queues and employs a round robin algorithm within each queue. Processes can move between queues based on their behavior and resource needs.
When a process uses less CPU time than the quantum provided in its current level, it may be moved to a higher priority queue, thus getting more frequent access to the CPU. On the other hand, if a process uses more CPU time, it may be moved to a lower priority queue. This approach optimizes CPU time, balances load, and improves the overall efficiency of the system.
In the context of scheduling algorithms, the traditional UNIX scheduler employs multilevel feedback user round robin within each of the priority queues.
This means that the scheduler uses multiple priority queues and applies a round-robin scheduling algorithm within each queue.