main.go

package main

import (
	"fmt"
	"math"
)

func pp(a []uint64, oldcap int) {
	if cap(a) != oldcap {
		var ntimes float64
		if oldcap != 0 {
			ntimes = float64(cap(a))/float64(oldcap)
		}
		fmt.Printf("len=%d, cap=%d, ntimes=%f\n", len(a), cap(a), ntimes)
	}
}

func main() {
	a := make([]uint64, 0)
	oldcap := cap(a)
	pp(a, oldcap)

	var i uint64
	for i = 0; i < uint64(math.Pow(2, 32)); i++ {
		oldcap := cap(a)
		a = append(a, 0)
		pp(a, oldcap)
	}

}