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What lead to the concept of paging?
The main memory is separated into two parts that are one for the resident operating system, and one for the user processes. We may perhaps place the OS in either low memory or high memory. But typically we want several user processes to reside in memory at the same time. In the contiguous memory allocation every process is contained in a single contiguous section of memory. However it's not possible to allocate contiguous memory for all the processes waiting in the input queue. Here comes the requirement for a new memory management technique.
Two other important factors that lead to the development of paging are internal and external fragmentation.
The optimal replacement policy, called OPT, is to evict the page which will be accessed farthest into the future. Since we can't predict the future precisely, we can't implement OP
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What is a Dispatcher? The dispatcher is the module that gives control of the CPU to the process selected by the short- term scheduler. This function includes: Switching
reasons for process termination
Central to implementation of a modern memory management system is the page replacement algorithm. Modern virtual memory systems break memory up into pages and map (via a page table
Literature review
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Define the Client - Server Communications Environment Today's client - server communications environment offers programmers great flexibility for application design. Applicatio
Define Ageing Ageing is a method of enhancing the priority of process waiting in Queue for CPU allocation
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