One of the biggest impediments to widespread use of virtual machines is the performance overhead incurred by running a virtual machine. The table below lists various performance parameters and application behavior.
Calculate the CPI for the system listed above assuming that there are no accesses to I/O. What is the CPI if the VMM performance impact doubles? If it is cut in half? If a virtual machine software company wishes to obtain a 10% performance degradation, what is the longest possible penalty to trap to the VMM?