GOLANG 查询变量或结构内存占用（不准确，不符合直觉）

package main

import (
        "fmt"
        "unsafe"

)

type Man struct {
        Maa map[string]string
	Naa []byte
}

func main() {
	m := make(map[string]string)
	m["a"] = "3856"
	m["g.t"] = "a_3856"
	m["pr"] = "20000000"
	m["pr.t"] = "t-par-200000001"
	m["ses"] = "841959653263999106"
	m["ssc"] = "3478712679"
	m["s"] = "462"
	
        n := []byte{10,158,10,133,230,1,154,12,24,2,50,8,8,8,186,7,161,0,229,140,133,230,187,161,228,186,134,34,32,232,131,140,229,140,133,230,187,161,228}

	o := Man{
		Maa : m,
		Naa : n,
	}

	fmt.Println("man size:", unsafe.Sizeof(o))
        fmt.Println("man size:", unsafe.Sizeof(m))
        fmt.Println("man size:", unsafe.Sizeof(n))
}

这里记录是说明一件事。这种查询变量或结构内存占用的方法不可取。

它只能说明结构的类型占用的内存大小。不能说明结构变量的数据占用的内存大小。