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Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?
- a)Shortest remaining time first
- b)Round-robin with time quantum less than the shortest CPU burst
- c)Uniform random
- d)Highest priority first with priority proportional to CPU burst length
Correct answer is option 'A'. Can you explain this answer?
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Consider an arbitrary set of CPU-bound processes with unequal CPU burs...
Turnaround time is the total time taken by the process between starting and the completion and waiting time is the time for which process is ready to run but not executed by CPU scheduler. As we know, in all CPU Scheduling algorithms, shortest job first is optimal i.ie. it gives minimum turn round time, minimum average waiting time and high throughput and the most important thing is that shortest remaining time first is the pre-emptive version of shortest job first. shortest remaining time first scheduling algorithm may lead to starvation because If the short processes are added to the cpu scheduler continuously then the currently running process will never be able to execute as they will get pre-empted but here all the processes are arrived at same time so there will be no issue such as starvation. So, the answer is Shortest remaining time first, which is answer (A).
Most Upvoted Answer
Consider an arbitrary set of CPU-bound processes with unequal CPU burs...
Shortest Remaining Time First (SRTF) is the process scheduling algorithm that would minimize the average waiting time in the ready queue for an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time. Here's an explanation of why this is the case:
Shortest Remaining Time First (SRTF) Algorithm:
The SRTF algorithm selects the process with the shortest remaining burst time to execute next. It preempts the currently running process if a new process with a shorter burst time arrives. This ensures that the process with the shortest remaining burst time always gets the CPU until it completes.
Explanation:
When we have a set of CPU-bound processes with unequal burst lengths, the processes with shorter burst times tend to complete their execution faster, while processes with longer burst times take longer to complete. This leads to a phenomenon called the "convoy effect," where long processes hold up shorter processes in the ready queue, resulting in increased waiting times for shorter processes.
Advantages of SRTF:
1. Minimizes Waiting Time: The SRTF algorithm selects the process with the shortest remaining burst time, which allows shorter processes to get the CPU more frequently. This minimizes the average waiting time in the ready queue as shorter processes are completed quickly.
2. Preemption: The SRTF algorithm preemptively switches to a shorter process if it arrives during the execution of a longer process. This ensures that shorter processes are not delayed unnecessarily.
3. Optimal Scheduling: The SRTF algorithm provides an optimal scheduling solution by selecting the process with the shortest remaining burst time.
Other Options:
1. Round-robin with time quantum less than the shortest CPU burst: This option may reduce the waiting time for processes with long burst times, but it does not prioritize shorter processes, leading to increased waiting times for them.
2. Uniform random: This option does not consider the burst times of processes and selects the next process randomly. It does not guarantee minimizing the average waiting time.
3. Highest priority first with priority proportional to CPU burst length: This option assigns higher priority to processes with longer burst times, which can lead to longer waiting times for shorter processes.
Therefore, the SRTF algorithm is the most suitable process scheduling algorithm for minimizing the average waiting time in the ready queue for an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time.
Shortest Remaining Time First (SRTF) Algorithm:
The SRTF algorithm selects the process with the shortest remaining burst time to execute next. It preempts the currently running process if a new process with a shorter burst time arrives. This ensures that the process with the shortest remaining burst time always gets the CPU until it completes.
Explanation:
When we have a set of CPU-bound processes with unequal burst lengths, the processes with shorter burst times tend to complete their execution faster, while processes with longer burst times take longer to complete. This leads to a phenomenon called the "convoy effect," where long processes hold up shorter processes in the ready queue, resulting in increased waiting times for shorter processes.
Advantages of SRTF:
1. Minimizes Waiting Time: The SRTF algorithm selects the process with the shortest remaining burst time, which allows shorter processes to get the CPU more frequently. This minimizes the average waiting time in the ready queue as shorter processes are completed quickly.
2. Preemption: The SRTF algorithm preemptively switches to a shorter process if it arrives during the execution of a longer process. This ensures that shorter processes are not delayed unnecessarily.
3. Optimal Scheduling: The SRTF algorithm provides an optimal scheduling solution by selecting the process with the shortest remaining burst time.
Other Options:
1. Round-robin with time quantum less than the shortest CPU burst: This option may reduce the waiting time for processes with long burst times, but it does not prioritize shorter processes, leading to increased waiting times for them.
2. Uniform random: This option does not consider the burst times of processes and selects the next process randomly. It does not guarantee minimizing the average waiting time.
3. Highest priority first with priority proportional to CPU burst length: This option assigns higher priority to processes with longer burst times, which can lead to longer waiting times for shorter processes.
Therefore, the SRTF algorithm is the most suitable process scheduling algorithm for minimizing the average waiting time in the ready queue for an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time.
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Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer?
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Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer?.
Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider an arbitrary set of CPU-bound processes with unequal CPU burst lengths submitted at the same time to a computer system. Which one of the following process scheduling algorithms would minimize the average waiting time in the ready queue?a)Shortest remaining time firstb)Round-robin with time quantum less than the shortest CPU burstc)Uniform randomd)Highest priority first with priority proportional to CPU burst lengthCorrect answer is option 'A'. Can you explain this answer?.
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