Page replacement algorithms

Question

Describe page replacement algorithms?

Answer 1

page replacement algorithms:-Several approaches to replace pages from disk to memory on occurrence of page fault

• Σ_i VAS_i >> Physical Memory
• Along with demand paging, physical memory fills rapidly
• While a process faults & memory is full, some page have to be swapped out
• Handling a page fault now needs two disk accesses not one.
• Though writes are more competent than reads