- Key to multi-programming
- Long term
- Medium term
- Short term
- I/O
Long Term Scheduling
- Determines which programs are submitted for processing
- i.e. controls the degree of multi-programming
- Once submitted, a job becomes a process for the short term scheduler
- (or it becomes a swapped out job for the medium term scheduler)
- Part of the swapping function (later…)
- Usually based on the need to manage multi-programming
- If no virtual memory, memory management is also an issue
