Seconds instructions Example cycles instruction seconds ? cycle constant program program trade-off . Percentage of instructions of a program (CPU A) compare 20%, branch 20%, others 60% compare 1...

Seconds instructions Example cycles instruction seconds ? cycle constant program program trade-off . Percentage of instructions of a program (CPU A) compare 20%, branch 20%, others 60% compare 1 cycle, branch 2 cycles, others 1 cycle (CPI) - CPIA CPUAN . Percentage of instructions of the same program (CPU B) combine "compare & branch" in one instruction compare & branch 2 cycles, others 1 cycle (CPI) - CPIB = - CPUB=