UGC NET Dec-2020 and June-2021 Paper-1
October 10, 2023Operating-Systems
October 10, 2023Operating-Systems
| Question 400 |
Find the effective access time for the memory for given data.
Page fault service time=8ms
Average memory access time=20ms
One page fault is generated for every memory access=106
| 29ns | |
| 33ns | |
| 28ns | |
| 30ns |
Question 400 Explanation:
Given data,
Page fault service time=8ms
Average memory access time=20ms
One page fault is generated for every memory access=106
P = page fault rate
Effective Memory Access = p × page fault service time + (1 – p) × Memory access time
Page fault service time=8ms
Average memory access time=20ms
One page fault is generated for every memory access=106
P = page fault rate
Effective Memory Access = p × page fault service time + (1 – p) × Memory access time
=(1/106)*8*106+(1-1/106)*20
≅27.99998 ns
Correct Answer: C
Question 400 Explanation:
Given data,
Page fault service time=8ms
Average memory access time=20ms
One page fault is generated for every memory access=106
P = page fault rate
Effective Memory Access = p × page fault service time + (1 – p) × Memory access time
Page fault service time=8ms
Average memory access time=20ms
One page fault is generated for every memory access=106
P = page fault rate
Effective Memory Access = p × page fault service time + (1 – p) × Memory access time
=(1/106)*8*106+(1-1/106)*20
≅27.99998 ns
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