CPU time CPU时间=CPU Clock Cycles (CPU时钟周期=数CPU时钟循环次数)*Clock Cycle Time(时钟周期) =CPU Clock Cycles (CPU时钟周期数)/Clock Rate(时钟频率)
Instruction Count 指令数
Average cycles per instruction (CPI)每条计算机指令执行所需的平均周期数 Clock Cycles =Instruction Count *Cycles per Instruction(每个指令周期数) CPU Time =Instruction Count *CPI* Clock Cycle Time =Instruction Count *CPI / Clock Rate
CPU time= (Instructions / program) *(Clock cycles/Instruction)*(Seconds / Clock cycle)