Question

Suppose the time to service a page fault is on the average $20$ms, while a memory access takes $5\mu$ sec than $91\%$ hit ratio results in effective memory access time of.

• A. $1.80$ms
• B. $1.75$ms
• C. $1.74$ms
• D. $1.79$ms

Answer 1

The correct option is A $1.80$ms

Suppose the time to service a page fault is on the average 20 m s, while a memory access takes 5μ sec than 91% hit ratio results in effective memory access time of 1.80ms.

A page fault is a type of exception raised by computer hardware when a running program accesses a memory page that is not currently mapped by the memory management unit (MMU) into the virtual address space of a process.