Legolas
What is virtual memory? Where it used by OS?
By Legolas in Operating Systems on Jul 04 2011
  • Oceanpass
    Dec, 2011 17

    Virtual memory The conceptual separation of user logical memory from physical memory.Thus we can have large virtual memory on a small physical memory.
    Demand paging When a page is touched, bring it from secondary to main memory.
    Overlays  Laying  of  code  data  on  the  same  logical  addresses  - this  is  the
    reuse of logical memory. Useful when the program is in phases or
    when logical address space is small.
    Dynamic loading  A routine is loaded only when it's called.
    projects for computer science

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