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This is Chen Yixiao's ppt at the 2020 gopher meet up in shenzhen.

Go性能优化之路

作者：陈一枭

说明：这是腾讯高级工程师陈一枭在2020年初于深圳gopher meet up为大家演讲的PPT，内容非常干！PPT为操作指南，zip压缩包则是示例demo，每一步都有！

目录：

  1. 何时性能优化
  2. 如何性能优化
  3. 性能优化实践

1.何时性能优化

  • 何时开始
  • 何时停止

2.如何性能优化

  • 基准---benchmark的使用
  • 分析工具：GODEBUG
  • 分析工具：go tool pprof
  • 分析工具：go tool trace
  • 优化
  • 校验

3.性能优化实践

  • 示例使用sync.pool复用对象
  • 使用成员变量复用对象
  • 写时复制代替互斥锁
  • 分区：减少共享数据结构争用
  • 避免包含指针结构体作为map的key
  • 使用string.Builder拼接字符串
  • 其他

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