GoLabel dt=2 label_string=2
GoBlock dt=1049 reason_string=15 stack=5
GoUnblock dt=23 g=58 g_seq=7 stack=0
GoStart dt=8 g=58 g_seq=8
GoLabel dt=1 label_string=2
GoBlock dt=1126 reason_string=15 stack=5
GoUnblock dt=12 g=53 g_seq=3 stack=0
GoStart dt=5 g=53 g_seq=4
GoLabel dt=1 label_string=2
GoBlock dt=1751 reason_string=15 stack=5
GoUnblock dt=12 g=53 g_seq=5 stack=0
GoStart dt=6 g=53 g_seq=6
GoLabel dt=3 label_string=2

GoStart dt=118 g=22 g_seq=5
GoLabel dt=1 label_string=2
GoBlock dt=7117 reason_string=15 stack=27
ProcStop dt=41
ProcStart dt=150567 p=4 p_seq=7
GoUnblock dt=41 g=23 g_seq=4 stack=0
HeapAlloc dt=108 heapalloc_value=17163592
HeapAlloc dt=61 heapalloc_value=17166856
HeapAlloc dt=2994 heapalloc_value=17608712
GoStart dt=1008 g=23 g_seq=5
GoLabel dt=4 label_string=4
GoBlock dt=40 reason_string=15 stack=27

		Name:         "HeapGoal",
		Args:         []string{"dt", "heapgoal_value"},
		IsTimedEvent: true,
	},
	EvGoLabel: event.Spec{
		Name:         "GoLabel",
		Args:         []string{"dt", "label_string"},
		IsTimedEvent: true,
		StringIDs:    []int{1},
	},
	EvUserTaskBegin: event.Spec{
		Name:         "UserTaskBegin",
		Args:         []string{"dt", "task", "parent_task", "name_string", "stack"},

	for k, v := range numLabels {
		units := numUnits[k]
		var labelString string
		if len(units) == len(v) {
			values := make([]string, len(v))
			for i, vv := range v {
				values[i] = fmt.Sprintf("%d %s", vv, units[i])
			}
			labelString = fmt.Sprintf("%s:%v", k, values)
		} else {
			labelString = fmt.Sprintf("%s:%v", k, v)
		}
		ls = append(ls, labelString)
	}
	sort.Strings(ls)
	return strings.Join(ls, " ")