Virtual memory Manage bloatware a Where programs are too big to fit into memory a Being split by programs is a bad idea(overlays) a Virtual memory Every program has its own address space The address space is divided into chunks called pages Each page is a contiguous area and mapped to physical address But, not all pages are needed to in physical memory OS maps page addresses and physical addresses on the fly When a needed page not in memory, oS needs to get it in Every page needs relocationVirtual Memory ◼ Manage bloatware ❑ Where programs are too big to fit into memory ❑ Being split by programs is a bad idea (overlays) ❑ Virtual memory ◼ Every program has its own address space ◼ The address space is divided into chunks called pages ◼ Each page is a contiguous area and mapped to physical address ◼ But, not all pages are needed to in physical memory ◼ OS maps page addresses and physical addresses on the fly ◼ When a needed page not in memory, OS needs to get it in ◼ Every page needs relocation