Как на golang узнать загруженность процессора, имя компьютера и имя пользователя на компьютере?

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package main

import (
	"fmt"
	"os"
	"os/user"
	"runtime"
	"sync"
	"time"

	"github.com/shirou/gopsutil/cpu"
	"github.com/shirou/gopsutil/host"
)

func main() {
	cpuUsage, err := getCPUUsage()
	if err != nil {
		fmt.Println("Failed to get CPU usage:", err)
	} else {
		fmt.Println("CPU Usage:", cpuUsage, "%")
	}

	hostname, err := getHostname()
	if err != nil {
		fmt.Println("Failed to get hostname:", err)
	} else {
		fmt.Println("Hostname:", hostname)
	}

	username, err := getUsername()
	if err != nil {
		fmt.Println("Failed to get username:", err)
	} else {
		fmt.Println("Username:", username)
	}
}

func getCPUUsage() (float64, error) {
	v, err := cpu.Percent(time.Second, false)
	if err != nil {
		return 0.0, err
	}

	// The cpu.Percent function returns the CPU usage as an array of percentages,
	// but on most systems, the first element represents the overall CPU usage.
	return v[0], nil
}

func getHostname() (string, error) {
	h, err := host.Info()
	if err != nil {
		return "", err
	}

	return h.Hostname, nil
}

func getUsername() (string, error) {
	u, err := user.Current()
	if err != nil {
		return "", err
	}

	return u.Username, nil
}

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go get github.com/shirou/gopsutil/cpu
go get github.com/shirou/gopsutil/host