What tools did you use in Go, including for profiling and performance evaluation?

For profiling and performance assessment in Go, I used standard tools from the runtime/pprof and net/http/pprof packages. They allow collecting CPU profiles, memory profiles, and lock profiles. I also used go tool trace for analyzing program execution traces.

Example of CPU profiling:

import (
    "os"
    "runtime/pprof"
)

func main() {
    f, _ := os.Create("cpu.prof")
    pprof.StartCPUProfile(f)
    defer pprof.StopCPUProfile()

    // code to profile
}

For performance analysis, I also used benchmarks with the testing package and external tools, such as pprof combined with a graphical interface for visualization.