In the process scheduling, ______ determines when new processes are ad...
Long term scheduling
- Determines when new processes are admitted to the system
- Also known as admission scheduling or job scheduling
- Determines which processes should be brought into the system from the job pool or job queue
- Decides when a new process can be created and executed in the system
- Mainly focuses on managing the resources required by the processes and ensuring that the system does not become overloaded
Medium term scheduling
- Involves swapping processes between main memory and secondary memory (e.g., hard disk)
- Decides which processes should be swapped out of main memory and which should be brought back in
- It is responsible for managing the degree of multiprogramming or the number of processes in the ready state that are kept in main memory
Short term scheduling
- Also known as CPU scheduling
- Determines which process should be executed next by the CPU
- Determines the order in which ready processes are allocated the CPU for execution
- Focuses on improving the performance of the system by minimizing the waiting time and maximizing the CPU utilization
- Examples of short-term scheduling algorithms include First-Come, First-Served (FCFS), Round Robin, and Shortest Job Next (SJN)
None of these
- This option is incorrect as one of the above options is the correct answer
In the process scheduling, ______ determines when new processes are ad...
Understanding Process Scheduling
In operating systems, process scheduling is crucial for managing the execution of processes. It involves three types of scheduling: long-term, medium-term, and short-term. Each plays a specific role in the lifecycle of processes.
Long-Term Scheduling
- Definition: Long-term scheduling, also known as job scheduling, is responsible for determining which processes are admitted to the system for processing.
- Function: It controls the degree of multiprogramming by managing the number of processes in the ready queue. This scheduling is important for balancing load and ensuring that the system does not become overwhelmed.
- Admission Control: Long-term scheduling decides when new processes should enter the system based on criteria like system load, resource availability, and priority levels. It decides the process's admission to the system and transitions it from the new state to the ready state.
Medium-Term Scheduling
- Definition: Medium-term scheduling is focused on the swapping of processes in and out of memory.
- Function: It temporarily removes processes from the main memory and places them in secondary storage, which can help in managing memory utilization effectively.
Short-Term Scheduling
- Definition: Short-term scheduling, also known as CPU scheduling, decides which of the ready, in-memory processes should be executed next by the CPU.
- Function: This scheduling operates on a very short time frame and is responsible for ensuring that CPU time is fairly and efficiently allocated among processes.
Conclusion
In summary, the correct answer to the question is option 'A', as long-term scheduling is the key mechanism that controls the admission of new processes into the system, setting the stage for efficient process management.