Compare the advantages and disadvantages of paged segmentation scheme over conventional paging scheme for memory management.
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To use the processor and the I/O facilities efficiently, it is desirable to maintain many processes, as possible, in main memory. In addition, it is desirable to free programmers from size restrictions in program development than to restrict them with small sizes (that happened in the older computers). The restriction to a predefined size redirects the programmers effort from the use of better programming techniques to a continuously effort to make fit in that size a solution, not necessarily the optimal one. The way to address both of these concerns is virtual memory (VM). Virtual memory systems are an abstraction of the primary memory in a von Neumann computer. Even in a time of decreasing physical memory costs, contemporary computers devote considerable resources to supporting virtual address spaces that are much larger than the physical memory allocated to a process. Contemporary software relies heavily on virtual memory to support applications such as image management with huge memory requirements. (Sami & Hamed ,2007) .