package main

import "time"
import "fmt"
import "runtime"

const fragment_size = 13000

type Buffer struct {
  bufs [][]byte
}

func (b *Buffer) Fill() {
  b.bufs = make([][]byte, 1000)
  for i := range b.bufs {
    b.bufs[i] = make([]byte, fragment_size)
  }
}
 
func (b *Buffer) String() string {
  buf := make([]byte, 0, (len(b.bufs)-1)*fragment_size )
  for i := 0; i < len(b.bufs)-1; i++ {
    buf = append(buf, b.bufs[i]...)   
  }
  return string(buf)
}

func main() {
  var b Buffer
  b.Fill()
  
  var max uint64 = 0
  for { 
  if len(b.String()) > 0 {
    var m runtime.MemStats
    runtime.ReadMemStats(&m)
    if m.HeapAlloc > max { max = m.HeapAlloc }
    fmt.Println(max)
    time.Sleep(100*time.Millisecond) }
  }
}