mem.go

package main

import (
	"runtime/debug"
	"time"
)

func main() {

	m := int64(1024*1024) * 100
	for i := 1; i < 10; i++ {
		test(m * int64(i))
	}

	debug.FreeOSMemory()
	time.Sleep(time.Second * 100)

}

func test(n int64) {

	b := make([]byte, n)
	b[1] = 'a'
	b[n-1] = 'z'
}