Prerequisite – Process Scheduler
Long-Term Scheduler is also known as Job Scheduler. long-term scheduler regulates the programs which are selected to system for processing. In this the programs are setup in the queue and as per the requirement the best one job is selected and it takes the processes from job pool. It regulates the Degree of Multi-programming (DOM).
Short-Term Scheduler is also known as CPU Scheduler. Short-Term Scheduler ensures which program is suitable or important for processing. It regulates the less DOM (Degree of Multi-programming).
Difference Between Long-Term and Short-Term Scheduler:
|S.NO||Long-Term Scheduler||Short-Term Scheduler|
|1.||Long-Term Scheduler takes the process from job pool.||Short-Term Scheduler takes the process from ready queue.|
|2.||Long-Term Scheduler is also known as Job Scheduler.||Short-Term Scheduler is also known as CPU Scheduler.|
|3.||In Long-Term Scheduler, the programs are setup in the queue and as per the requirement the best one job is selected.||In Short-Term Scheduler no such queue is exist.|
|4.||It regulates the more DOM (Degree of Multi-programming).||It regulates the less DOM (Degree of Multi-programming).|
|5.||It regulates the programs which are selected to system for processing.||It ensures which program is suitable or important for processing.|
- Operating System | Difference between dispatcher and scheduler
- Operating System | Process Scheduler
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