Question

Given memory partitions of 100 KB,500 Kb,200 KB,300 KB,and 600 KB(in order), how would each of the first-fit, best-fit,and worst-fit algorithms place processes of 212 KB, 417 KB, 112 KB,and 426 KB, (in order)? Which algorithm makes the most efficientuse of memory?

Answer 1

The question asks about allocating processes to memory partitions using first-fit, best-fit, and worst-fit algorithms. The best-fit algorithm is generally the most efficient, although it can cause fragmentation. Each algorithm allocates processes differently based on the size of memory partitions and the order of allocation.

Step-by-step explanation:

The subject of this question is the placement of processes in memory partitions using the first-fit, best-fit, and worst-fit algorithms in the context of operating systems in Computers and Technology.

First-Fit Algorithm

For the first-fit algorithm, the processes will be placed as follows:

• 212 KB in the 500 KB partition
• 417 KB in the 600 KB partition
• 112 KB in the 200 KB partition
• 426 KB cannot be placed as the remaining partitions are too small

Best-Fit Algorithm

For the best-fit algorithm, the processes would be placed like this:

• 212 KB in the 300 KB partition
• 417 KB in the 500 KB partition
• 112 KB in the remaining 200 KB partition
• 426 KB in the 600 KB partition

Worst-Fit Algorithm

For the worst-fit algorithm, the process placement would be:

• 212 KB in the 600 KB partition
• 417 KB in the 500 KB partition
• 112 KB in the 300 KB partition
• 426 KB cannot be placed as the remaining partitions are too small

In terms of the most efficient use of memory, the best-fit algorithm generally leaves the smallest leftover memory blocks, thereby making more efficient use of available memory compared to the first-fit and worst-fit algorithms, although it can lead to fragmentation issues over time.