Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > If the time-slice used in the round-robin sch...
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If the time-slice used in the round-robin scheduling policy is more than the maximum time required to execute any process, then the policy will
- a)degenerate to shortest job first
- b)degenerate to priority scheduling
- c)degenerate to first come first serve
- d)none of the above
Correct answer is option 'C'. Can you explain this answer?
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If the time-slice used in the round-robin scheduling policy is more th...
RR executes processes in FCFS manner with a time slice. It this time slice becomes long enough, so that a process finishes within it, It becomes FCFS.
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If the time-slice used in the round-robin scheduling policy is more th...
Explanation:
In round-robin scheduling, each process is assigned a fixed time period called the time-slice or quantum, and the processes are executed in a cyclic manner. The time-slice determines how long each process gets to run before being preempted and moved to the back of the queue.
Degeneration to First Come First Serve:
If the time-slice used in the round-robin scheduling policy is more than the maximum time required to execute any process, then the policy will degenerate to first come first served. This means that the processes will be executed in the order they arrive, without any preemption or time-slicing.
Explanation:
When the time-slice is greater than the maximum time required to execute any process, it means that each process will be able to complete its execution within its time-slice without being preempted. As a result, there will be no need to switch between processes before they complete their execution.
Consequences:
This leads to the following consequences:
1. No Preemption: Since the processes are not preempted before completing their execution, a long-running process can hold the CPU for an extended period of time, causing other processes to wait. This violates the basic principle of round-robin scheduling, which aims to provide fair and equal CPU time to each process.
2. Lack of Time-sharing: With the absence of time-slicing, the CPU is not effectively shared among the processes. Instead, it is allocated to one process until its completion, and then moves on to the next process in the queue.
3. Inefficiency: This degeneration to first come first served can result in inefficiency, as shorter processes that could have completed quickly are forced to wait behind longer processes. This can lead to increased waiting times and response times for processes.
Conclusion:
Therefore, when the time-slice used in the round-robin scheduling policy is more than the maximum time required to execute any process, the policy will degenerate to first come first served. This can lead to unfair CPU allocation, lack of time-sharing, and decreased efficiency in the scheduling algorithm.
In round-robin scheduling, each process is assigned a fixed time period called the time-slice or quantum, and the processes are executed in a cyclic manner. The time-slice determines how long each process gets to run before being preempted and moved to the back of the queue.
Degeneration to First Come First Serve:
If the time-slice used in the round-robin scheduling policy is more than the maximum time required to execute any process, then the policy will degenerate to first come first served. This means that the processes will be executed in the order they arrive, without any preemption or time-slicing.
Explanation:
When the time-slice is greater than the maximum time required to execute any process, it means that each process will be able to complete its execution within its time-slice without being preempted. As a result, there will be no need to switch between processes before they complete their execution.
Consequences:
This leads to the following consequences:
1. No Preemption: Since the processes are not preempted before completing their execution, a long-running process can hold the CPU for an extended period of time, causing other processes to wait. This violates the basic principle of round-robin scheduling, which aims to provide fair and equal CPU time to each process.
2. Lack of Time-sharing: With the absence of time-slicing, the CPU is not effectively shared among the processes. Instead, it is allocated to one process until its completion, and then moves on to the next process in the queue.
3. Inefficiency: This degeneration to first come first served can result in inefficiency, as shorter processes that could have completed quickly are forced to wait behind longer processes. This can lead to increased waiting times and response times for processes.
Conclusion:
Therefore, when the time-slice used in the round-robin scheduling policy is more than the maximum time required to execute any process, the policy will degenerate to first come first served. This can lead to unfair CPU allocation, lack of time-sharing, and decreased efficiency in the scheduling algorithm.
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If the time-slice used in the round-robin scheduling policy is more than the maximum time required to execute any process, then the policy willa)degenerate to shortest job firstb)degenerate to priority schedulingc)degenerate to first come first served)none of the aboveCorrect answer is option 'C'. Can you explain this answer?
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