• Memory 内存知识-27-Prefetch 预取
  Prefetching 目的 The purpose of prefetching is to hide the latency of a memory access. 直接预取，可以隐藏内存访问的延迟。 The command pipeline and out-of-order (OOO) execution capabilities of today’s processors c...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-26-024-TLB 访问优化
  Optimizing TLB Usage There are two kinds of optimization of TLB usage. 降低程序使用的 page 数量 The first optimization is to reduce the number of pages a program has to use. This automatically results i...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-26-023-L2 缓存优化
  Optimizing Level 2 and Higher Cache Access Everything said about optimizations for level 1 caches also applies to level 2 and higher cache accesses. ps: 优化的思想是相通的。 补充内容 There are two additional...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-26-021-实战技巧之 Cache L1 指令优化
  优化 L1 指令 Preparing code for good L1i use needs similar techniques as good L1d use. The problem is, though, that the programmer usually does not directly influence the way L1i is used unless s/he ...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-26-021-实战技巧之 Cache L1 优化
  Cache Access Programmers wishing to improve their programs’ performance will find it best to focus on changes affected the level 1 cache since those will likely yield the best results. We will di...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-2601-实战技巧之绕过缓存
  What Programmers Can Do After the descriptions in the previous sections it is clear that there are many, many opportunities for programmers to influence a program’s performance, positively or nega...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-25-NUMA
  NUMA Support In section 2 we saw that, on some machines, the cost of access to specific regions of physical memory differs depending on where the access originated. This type of hardware requires...
  2019-05-10 03:08:59 | Memory
• Memory 内存知识-24-虚拟内存
  Virtual Memory The virtual memory (VM) subsystem of a processor implements the virtual address spaces provided to each process. This makes each process think it is alone in the system. ps: 让每一个进...
  2019-05-10 03:08:59 | Memory