• Memory 内存知识-31-模仿 CPU 缓存
  Simulating CPU Caches While the technical description of how a cache works is relatively easy to understand, it is not so easy to see how an actual program behaves with respect to（尊重） cache. Prog...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-30-性能工具
  Memory Performance Tools A wide variety of tools is available to help programmers understand performance characteristics of a program, the cache and memory use among others. Modern processors hav...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-29-NUMA 显示优化
  Explicit NUMA Optimizations All the local memory and affinity rules cannot help out if all threads on all the nodes need access to the same memory regions. It is, of course, possible to simply re...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-29-NUMA 节点信息
  Querying Node Information The get_mempolicy interface can be used to query a variety of facts about the state of NUMA for a given address. #include <numaif.h> long get_mempolicy(int *policy...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-29-NUMA 内存策略与 swapping
  Swapping and Policies If physical memory runs out, the system has to drop clean pages and save dirty pages to swap. The Linux swap implementation discards（丢弃） node information when it writes page...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-29-NUMA 内存策略
  Memory Policy The idea behind defining a memory policy is to allow existing code to work reasonably well in a NUMA environment without major modifications. The policy is inherited by child proces...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-29-NUMA 概览
  NUMA For NUMA programming everything said so far about cache optimizations applies as well. The differences only start below that level. NUMA introduces different costs when accessing different ...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-28-多线程优化之并发
  Multi-Thread Optimizations When it comes to multi-threading, there are three different aspects of cache use which are important: Concurrency Atomicity Bandwidth T...
  2019-05-10 03:08:59 | Memory