负载工具性能测试，http server端

httpserver.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
	"strconv"
)

var data []byte
var length = 1024
var count = 0

func main() {
	if len(os.Args) != 2 {
		fmt.Fprintf(os.Stderr, "Usage: %s data-length\n", os.Args[0])
		os.Exit(1)
	}
	length, _ = strconv.Atoi(os.Args[1])
	makeData(0)
	log.Println(" data-length:", len(data))
	http.HandleFunc("/print", printEnv)
	http.ListenAndServe(":80", nil)
}

func printEnv(writer http.ResponseWriter, req *http.Request) {
	writer.Write(data)
}

func makeData(count int) {
	if count == length {
		return
	}
	data = append(data, 'x')
	count++
	makeData(count)
}