blockcipher

摘要： 转自http://ifeve.com/cpu-cache-flushing-fallacy-cn/即使是资深的技术人员，我经常听到他们谈论某些操作是如何导致一个CPU缓存的刷新。看来这是关于CPU缓存如何工作和缓存子系统如何与执行核心交互的一个常见误区。本文将致力于解释CPU缓存的功能以及执行程序指令的CPU核心如何与缓存交互。我将以最新的Intel x86 CPU为例进行说明，其他CPU也使用相似技术以达到相同目的。绝大部分常见的现代系统都被设计成在多处理器上共享内存。共享内存的系统都有一个单独的内存资源，它会被两个或者更多的独立CPU核心同时访问。核心到主存的延迟变化范围很大，大约在10- 阅读全文

摘要： http://duartes.org/gustavo/blog/category/software-illustrated/page/2Motherboard Chipsets and the Memory MapI’m going to write a few posts about computer internals with the goal of explaining how modern kernels work. I hope to make them useful to enthusiasts and programmers who are interested in this 阅读全文

摘要： http://duartes.org/gustavo/blog/post/what-your-computer-does-while-you-waitWhat Your Computer Does While You Wait当你等待时，计算机在做什么？This post takes a look at the speed – latency and throughput – of various subsystems in a modern commodity PC, an Intel Core 2 Duo at 3.0GHz. I hope to give a feel for the r 阅读全文

摘要： 经常听到系统架构、软件架构、信息架构、数据架构等等，那么怎么去区分这些概念呢？附录http://www.codingthearchitecture.com/pages/book/types-of-architecture.htmlTypes of architectureTreat enterprise architectures with a pinch of saltArchitecture applies to various aspects of software systems development, understandably so given its generic and 阅读全文