Multi-processor systems are often implemented using a common system bus as the communication mechanism between CPU, memory, and I/O adapters. It is also common to include features on each CPU module, such as cache memory, that enhance the performance…

http://www.amazon.com/Consistency-Coherence-Synthesis-Lectures-Architecture/dp/1608455645/ref=pd_sim_14_1?ie=UTF8&dpID=416Va%2B7GPIL&dpSrc=sims&preST=_AC_UL160_SR129%2C160_&refRID=0NSDDKF5MWV2FXY1QTVQ A Primer on Memory Consistency and Cac…

这篇文章介绍了cache的相关知识,包括全相关.组相关.缓存与置换策略.WriteThrough和WriteBack策略.cache体系.CPUID和缓存一致性.介绍了两种缓存一致性的协议:snoopy 和  directory based.重点讲述了Snoopy protocols的具体实现MESI协议和MERSI协议(X86体系)和扩展的MERSI协议(Cell体系).并在结尾给出了几点建议. 这篇文章介绍了内存地址转换的相关知识,同时讲述了在X86体系和Cell体系下的内存地址转换.这篇文…

原文作者:Gustavo Duarte 原文地址:http://duartes.org/gustavo/blog/post/what-your-computer-does-while-you-wait Page Cache, the Affair Between Memory and Files 工作于内存和文件之间的页缓存 Previously we looked at how the kernel manages virtual memory for a user process, but…

Previously we looked at how the kernel manages virtual memory for a user process, but files and I/O were left out. This post covers the important and often misunderstood relationship between files and memory and its consequences for performance. Two…

In a particular embodiment, a circuit device includes a translation look-aside buffer (TLB) configured to receive a virtual address and to translate the virtual address to a physical address of a cache having at least two partitions. The circuit devi…

An embodiment provides a virtual address cache memory including: a TLB virtual page memory configured to, when a rewrite to a TLB occurs, rewrite entry data; a data memory configured to hold cache data using a virtual page tag or a page offset as a c…

A method includes storing, with a first programmable processor, shared variable data to cache lines of a first cache of the first processor. The method further includes executing, with the first programmable processor, a store-with-release operation,…

where is the storage location of the browser's HTTP cache? disk or memory HTTP cache & storage location https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control maybe disk cache…

分类: LINUX 内核 2009-09-23 16:21 4561人阅读 评论(0) 收藏 举报 cachebufferos存储算法 Cache 的write back和write through 收藏 为了保证cache和memory的数据一致性,通常有三种方法: 1〉write through:CPU向cache写入数据时,同时向memory也写一份,使cache和memory的数据保持一致.优点是简单,缺点是每次都要访问memory,速度比较慢. 2〉post write:CPU更新ca…