Go allows for reading the VM's memory statistics, neat!

mem.go

package main

import (
	"fmt"
	"runtime"
)

func main() {
	s := new(runtime.MemStats)
	runtime.ReadMemStats(s)

	fmt.Println("Alloc : ", s.Alloc)
	fmt.Println("Total Alloc : ", s.TotalAlloc)
	fmt.Println("Sys : ", s.Sys)
	fmt.Println("Lookups : ", s.Lookups)
}