title: What does "VM Size" mean in the Windows Task Manager?
body: <p>Virtual memory from a computer size perspective is  </p>
  
  <blockquote>
    <p>[a way to make the program] think it
    has a large range of contiguous
    addresses; but in reality the parts it
    is currently using are scattered
    around RAM, and the inactive parts are
    saved in a disk file. (<a href="http://en.wikipedia.org/wiki/Virtual_memory" rel="noreferrer">Wikipedia</a>)</p>
  </blockquote>
  
  <p>I would interpret VM Size in the Windows Task manager as either the total addressable virtual memory space or the amount of memory the process is currently using in the virtual memory space. </p>
  
  <p>But in the Task Manager the WM Size is in many cases less than Mem Usage, which should be amount of RAM the process is using. Therefor I guess that WM Size means something else?</p>