Whenever we run several processes simultaneously, they run successfully as long as physical memory addressing all the processes. sometime process size may exceed to the available physical memory limits , then the corresponding process is thrown out from the process queue, that should not happen in real.
Our physical memory is very limited and of course expensive. so Virtual provides that provision in which we can run multiple process at the same time with being worried about the physical memory size. virtual memory provides a logical layer between memory requested by the Process and Memory Management Unit(MMU). Virtual memory allows each process to use subset of available physical memory.
This all possible because of paging technique. Paging provides a memory translation between virtual address to physical address.
Our physical memory is very limited and of course expensive. so Virtual provides that provision in which we can run multiple process at the same time with being worried about the physical memory size. virtual memory provides a logical layer between memory requested by the Process and Memory Management Unit(MMU). Virtual memory allows each process to use subset of available physical memory.
This all possible because of paging technique. Paging provides a memory translation between virtual address to physical address.
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