Consider a processor executing a program consisting of 3 different instructions classes (a, b, c), each with the same cpi, and with distributions a=40%, b=40%, c=20%. as currently implemented, the program executes in 500 milliseconds.
a) how long would it take for the program to fully execute if we modify the processor such that the speed of class b instructions is doubled (i. e., class b instructions take half as long after the improvement)?
b) in this scenario, how much faster is the improved processor relative to the original?