效能要點 (Performance)

參考

• Infographics: Operation Costs in CPU Clock Cycles

  • 詳細地說明各種操作所需要的 cycles，以及實務上的問題

  • 整數和浮點數轉換有成本

  • 改善 data locality

  • 改善 code locality

  • 改善 memory locality

  • 減少 allocation

  • C++ 的話減少 virtual call，可以採用 CRTP 之類的技巧

• Latency numbers every programmer should know

  • Gist - Latency numbers every programmer should know

• Teach Yourself Programming in Ten Years

• 2018 - uops.info: Characterizing Latency, Throughput, and Port Usage of Instructions on Intel Microarchitectures

• 2007 - What Every Programmer Should Know About Memory - Ulrich Drepper

• Computer latency: 1977-2017