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Determining memory conditions in a virtual machine

  • US 7,702,843 B1
  • Filed: 09/21/2006
  • Issued: 04/20/2010
  • Est. Priority Date: 04/27/2006
  • Status: Active Grant
First Claim
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1. A method for determining memory conditions in a virtual machine, said virtual machine comprising guest virtual memory and guest physical memory, the method comprising:

  • executing a first application on the virtual machine, said first application reserving a first location of a first size in the guest virtual memory;

    performing with a first frequency a first predetermined action, wherein performing said first predetermined action causes said first location in the guest virtual memory to be mapped to a second location in the guest physical memory;

    determining if said first location is not mapped to said second location;

    measuring an interval between performing said first predetermined action and determining that said first location in the guest virtual memory is not mapped to said second location in the guest physical memory;

    responsive to said interval, determining a memory condition in the virtual machine; and

    responsive to said determined memory condition in the virtual machine, modifying said first frequency with which said first predetermined action is performed.

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