What is the main task of the Pprof tool and how is it used in performance analysis of programs?

Pprof is a profiling tool in Go that helps analyze program performance. Its main task is to collect and visualize data on CPU usage, memory, locks, and other resources during program execution. This allows identifying bottlenecks, such as functions that take too much time or cause memory leaks.

Using pprof typically involves:

• Collecting profiles with built-in packages (e.g., net/http/pprof)
• Visualizing data as graphs or tables
• Optimizing code based on the obtained data

Example of CPU profiling:

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

func main() {
    go func() {
        log.Println(http.ListenAndServe("localhost:6060", nil))
    }()
    // Main program logic
}

Then, you can connect to http://localhost:6060/debug/pprof/ to get a profile for analysis.