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When the memory resources are scarce. We use compaction.
What is meant by the term 'compaction'
The process of moving all marked nodes to one end of memory and all available memory to other end is called compaction. Algorithm which performs compaction is called compacting algorithm.
External fragmentation is reduced by compaction. Compaction moves memory around until it is all placed together in one big block.
Virtual memory management assist in the process of multitasking by providing extra memory when a computer has used up all its RAM. Virtual memory is however slower than RAM.
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function of memory management
You can compress your files into a spare harddrive to keep your memory ok
MS-DOS does not have built-in memory management.
in memory allocation formates only we are using this associative memory. an it is widely used in database management systems etc................ If we want to get the information about this we will give the total information about the whole data.
static memory management i.e we are fixed the memory location with there size & that fixed size jobs will appear
static memory management i.e we are fixed the memory location with there size & that fixed size jobs will appear