Question
Which of the following scheduling algorithms can cause
the starvation of low-priority processes?Solution
Priority Scheduling is a scheduling algorithm where each process is assigned a priority, and the CPU is allocated to the process with the highest priority. While this algorithm is efficient in executing critical tasks first, it has a significant drawback: processes with low priority may experience starvation if high-priority processes continue to arrive. This happens because the CPU consistently prioritizes tasks with higher precedence, delaying the execution of lower-priority tasks indefinitely. To address this, techniques like aging are employed, where the priority of a process increases the longer it waits in the queue, eventually ensuring its execution. Priority Scheduling is commonly used in real-time systems where certain tasks must be executed immediately. Why Other Options Are Incorrect: 1. FCFS: Executes processes in the order of arrival, ensuring fairness but lacking prioritization. Starvation does not occur since all processes are treated equally. 2. SJF: While it minimizes average waiting time, it can cause starvation in its preemptive version (Shortest Remaining Time First), but not inherently in the non-preemptive mode. 3. RR: Designed for fairness by assigning time slices to processes in a cyclic manner, preventing starvation. 4. Multi-Level Queue Scheduling: May lead to starvation in poorly designed implementations, but this is not inherent to its mechanism. Priority Scheduling’s ability to handle critical tasks efficiently comes with the trade-off of potential starvation, making aging or hybrid approaches necessary for fairness.
A merchant mixes two varieties of rice of 6 kg and 4 kg, which cost him Rs. 7 and Rs. 5 per kg, respectively. What is the cost price (in Rs.) of the mix...
A mixture contains ‘x’% milk. 30% of this mixture is taken out and is replaced with same quantity of water. This procedure is repeated two more time...
A mixture of 512 ml contains milk and whey protein in the ratio of 9:7, respectively. When 'p' ml of whey protein and (p + 36) ml of milk are added to t...
A container has only two types (P and Q) of oil in the ratio 3:2 respectively. When 90 litre of oil Q is added to the container the quantity of oil P be...
161 litres mixture of milk and water is mixed in an empty container in the ratio 5:2, respectively. If 14 litres of mixture is replaced with 14 litres o...
Mixture 'A' consists of 'm' liters of milk, while mixture 'B' includes '11 + m' liters of milk. Determine the ratio in which mixture 'B' to mixture 'A' ...
Two alloys are combined to create a new alloy. The first alloy contains 20% copper, and the second alloy contains 40% copper. If the resulting alloy has...
"A 480-liter mixture of alcohol and water has alcohol and water in the ratio of 5: p. When 20 liters of water are added, the new ...
Mixture 'A' has only petrol and diesel in the ratio 5:4 respectively and mixture 'B has only petrol and diesel in the ratio 3:2 respectively. Mixtures '...
The diluted wine contains only 8 liters of wine, and the rest is water. A new mixture whose concentration is 30%, is to be formed by replacing wine. How...