高速缓存存储器(Cache Memories)包含在 CPU 中,完全由硬件管理,由 SRAM 为基础的芯片实现,由局部性原则,它存储着主存里更有可能被经常访问的数据块,当 CPU 需要数据时,CPU 先从 Cache Memories 里找,如果命中,这个过程大概只需要几个时钟周期。 由于高速缓存寄存器完全由硬件管理,所以硬件要知道如何在高速缓存寄存...
计算机内存中的缓存Cache Memories 这篇写一下计算机系统中的缓存Cache应用场景和实现方式介绍。 Memory hierarchy 在讲缓存之前,首先要了解计算机中的内存结构层次Memory hierarchy。也就是下图金字塔形状的结构。 从上到下,内存层次结构如下: 寄存器:这是计算机中最快速的存储区域。它们位于处理器内,用于存储即将被处理器...
1 Introduction Cache memories 是高速缓冲器 (buffers),用于临时保存较大且较慢的内存 (memory) 的部分内容以进行重复访问。大多数现代缓存都被组织为一组条目 (a set of entries)。每个条目由一个数据块 (block)(或行 (line))和一个地址标签 (address tag) 组成;地址标签是数据在较大(主)内存中的位置。缓...
CacheMemories •Usinganexamplecachesizeof128blocks of16wordseach.(totalof2048–2Kwords) •Mainmemoryisaddressablebya16-bit addressbus(64Kwords–viewedas4K blocksof16wordseach) •WritethroughProtocol –Cacheandmainmemoryareupdated simultaneously ...
Cache Memories - Smith - 1982 () Citation Context ...able metrics of spatial and temporal locality can have much to offer the greater understanding of application performance, particularly with respect to the deep memory hierarchies of today’s machines =-=[4, 3, 7, 25]-=-. Such analysis...
Lecture 12_ Cache Memories(中) http://www.cs.cmu.edu/afs/cs/academic/class/15213-f16/www/schedule.html 卡内基梅隆大学 Introduction to Computer Systems CMU 15-213 2015 Spring 讲课的两位教师就是《深入理解计算机系统》的作者
参考3:《Cache Memories》 Alan Jay Smith [Sep. 1982], ACM Computing Surveys Volume 14 Issue 3. 参考4:《Cache Memory》 Wang Qi, Yang xi等 [Mar. 2010] 参考5:《A case for two-way skewed-associative caches》 Andre Séance [May. 1993] ...
A two-level cache memory system for use in a computer system including two primary cache memories, one for storing instructions and one for storing data. The system also includes a secondary cache memory for storing both instructions an... HUY X. NGO,GEORGE S. TAYLOR,ALLEN W. ROBERTS,......
章节名:6.4 Cache Memories 页码:第608页 2013-11-04 17:33:30 A least-frequently-used (LFU) policy will replace the line that has been referenced the fewest times over some past time window. A least-recently-used (LRU) policy will replace the line that was last accessed the furthest in...
Software Time Reliability in the Presence of Cache MemoriesThe use of caches challenges measurement-based timing analysis (MBTA) in critical embedded systems. In the presence of caches, the worst-case timing behavior of a system heavily depends on how code and data are laid out in cache. ...