Determining memory conditions in a virtual machine

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
• sending said determined memory condition to said first application.

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, by the first application and 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;
• checking by a second application running outside the virtual machine if said first location is mapped to said second location;
• measuring an interval between performing said first predetermined action and the checking;
• responsive to said interval and said checking, determining by the second application a memory condition in the virtual machine;
• and
• sending said determined memory condition to a third application executing on the virtual machine.

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, by the first application and 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;
• checking by a second application running outside the virtual machine if said first location is mapped to said second location;
• measuring an interval between performing said first predetermined action and the checking;
• responsive to said interval and said checking, determining by the second application a memory condition in the virtual machine;
• executing a third application on the virtual machine, said third application reserving a third location of a second size in the guest virtual memory;
• and
• performing with a second frequency a second predetermined action, wherein performing said second predetermined action causes said third location in the guest virtual memory to be mapped to a fourth location in the guest physical memory;
• wherein said second frequency is different than said first frequency.

A computer program product for determining memory conditions in a virtual machine, said virtual machine comprising guest virtual memory and guest physical memory, the computer program product comprising a computer readable medium, the computer readable medium comprising:

• computer code for executing a first application on the virtual machine, said first application comprises computer code for reserving a first location of a first size in the guest virtual memory;
• computer code for performing, by the first application and 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;
• computer code for checking by a second application running outside the virtual machine if said first location is mapped to said second location;
• computer code for measuring an interval between performing said first predetermined action and the checking;
• and
• computer code, responsive to said interval and said checking, for determining by the second application a memory condition in the virtual machine;
• computer code, responsive to said determined memory condition in the virtual machine, for modifying said first frequency with which said first predetermined action is performed.

A computer program product for determining memory conditions in a virtual machine, said virtual machine comprising guest virtual memory and guest physical memory, the computer program product comprising a computer readable medium, the computer readable medium comprising:

• computer code for executing a first application on the virtual machine, said first application comprises computer code for reserving a first location of a first size in the guest virtual memory;
• computer code for performing, by the first application and 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;
• computer code for checking by a second application running outside the virtual machine if said first location is mapped to said second location;
• computer code for measuring an interval between performing said first predetermined action and the checking;
• computer code, responsive to said interval and said checking, for determining by the second application a memory condition in the virtual machine;
• and
• computer code for sending said determined memory condition to said first application.

A computer program product for determining memory conditions in a virtual machine, said virtual machine comprising guest virtual memory and guest physical memory, the computer program product comprising a computer readable medium, the computer readable medium comprising:

• computer code for executing a first application on the virtual machine, said first application comprises computer code for reserving a first location of a first size in the guest virtual memory;
• computer code for performing, by the first application and 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;
• computer code for checking by a second application running outside the virtual machine if said first location is mapped to said second location;
• computer code for measuring an interval between performing said first predetermined action and the checking;
• computer code, responsive to said interval and said checking, for determining by the second application a memory condition in the virtual machine;
• and
• computer code for sending said determined memory condition to a third application executing on the virtual machine.

A computer program product for determining memory conditions in a virtual machine, said virtual machine comprising guest virtual memory and guest physical memory, the computer program product comprising a computer readable medium, the computer readable medium comprising:

• computer code for executing a first application on the virtual machine, said first application comprises computer code for reserving a first location of a first size in the guest virtual memory;
• computer code for performing, by the first application and 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;
• computer code for checking by a second application running outside the virtual machine if said first location is mapped to said second location;
• computer code for measuring an interval between performing said first predetermined action and the checking;
• computer code, responsive to said interval and said checking, for determining by the second application a memory condition in the virtual machine;
• computer code for executing a third application on the virtual machine, said third application comprising computer code for reserving a third location of a second size in the guest virtual memory;
• and
• computer code for performing with a second frequency a second predetermined action, wherein performing said second predetermined action causes said third location in the guest virtual memory to be mapped to a fourth location in the guest physical memory;
• wherein said second frequency is different than said first frequency.