【简答题】CPU 执行一段程序时, cache 完成存取的次数为 5000 次,主存完成存取的次数为 200 次。已知 cache 存取周期 t c 为 40ns ,主存的存取周期为 t m 为 160ns ,分别求: cache 的命中率 h ,平均访问时间 t a , Cache- 主存系统的访问效率 e 分别是多少?
【简答题】Mr. White was riding a horse in the rain all the afternoon. When he reached a restaurant, he was all__ _1 ___ and cold. He saw a fire(火) in __ 2 __ restaurant and many people sitting __ 3__ _ it. He c...