What tools do you use for performance evaluation and profiling during application development?

To evaluate the performance and profile applications in Go, I use the following tools:

• pprof — a built-in package for profiling CPU, memory, and locks. It helps visualize bottlenecks and optimize code.
• Go Trace — for analyzing the scheduler and goroutines, helps identify concurrency issues.
• benchstat — for comparing benchmark results and assessing performance changes.
• Delve — a debugger that helps analyze code execution in real-time.

Example of using pprof:

import (
    "net/http"
    _ "net/http/pprof"
)

func main() {
    go func() {
        log.Println(http.ListenAndServe("localhost:6060", nil))
    }()
    // main application code
}

After starting, you can connect to http://localhost:6060/debug/pprof/ and collect profiles.