Golang

性能分析工具pprof

pprofFile, pprofErr := os.Create("cpu.pprof")
if pprofErr != nil {
  log.Fatal(pprofErr)
}
pprof.StartCPUProfile(pprofFile)
defer pprof.StopCPUProfile()

go tool pprof -http=":8000" ./cpu.pprof

打印编译器转义分析决策

go build -gcflags=-m demo.go