已知 Cache命中率 h=0.98,已知Cache存取周期为50ns,主存存取周期为200ns,求Cache/主存系统的效率。(计算结果保留两位小数)
r = tm/tc= 200ns / 50ns = 4
e = 1/[r + (1-r) h] = 1/[4 + (1-4) ×0.98] = 0.94
已知 Cache命中率 h=0.98,已知Cache存取周期为50ns,主存存取周期为200ns,求Cache/主存系统的效率。(计算结果保留两位小数)
r = tm/tc= 200ns / 50ns = 4
e = 1/[r + (1-r) h] = 1/[4 + (1-4) ×0.98] = 0.94