What is virtual memory? (the basic concept) requirement- - answer the question - provide full explanation including key details and please use this as a reference
What is virtual memory? (the basic concept) requirement- - answer the question - provide full explanation including key details and please use this as a reference
Chapter11: Operating Systems
Section: Chapter Questions
Problem 21VE
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Question- What is virtual memory? (the basic concept)
requirement-
- answer the question
- provide full explanation including key details
and please use this as a reference
![Virtual Memory
o Logical memory is separated from physical memory
o processes are not required to be completely in main
memory
leave out less often used code
• arrays, lists & tables are rarely as big as allocated +
• not all code is executed at once
o Advantages:
• processes can be larger than main memory
programmers are not limited by main memory size constraints
●
• Each process would take up less memory, allowing more
processes into main memory to keep CPU busy
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Transcribed Image Text:Virtual Memory
o Logical memory is separated from physical memory
o processes are not required to be completely in main
memory
leave out less often used code
• arrays, lists & tables are rarely as big as allocated +
• not all code is executed at once
o Advantages:
• processes can be larger than main memory
programmers are not limited by main memory size constraints
●
• Each process would take up less memory, allowing more
processes into main memory to keep CPU busy
pages can be shared
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