if len(s.Label) > 0 {
			ls := labelHeader
			for k, v := range s.Label {
				ls = ls + fmt.Sprintf("%s:%v ", k, v)
			}
			ss = append(ss, ls)
		}
		if len(s.NumLabel) > 0 {
			ls := labelHeader
			for k, v := range s.NumLabel {
				ls = ls + fmt.Sprintf("%s:%v ", k, v)
			}
			ss = append(ss, ls)
		}
	}

	ss = append(ss, "Locations")
	for _, l := range p.Location {

	// to making graph.
	// TODO: modify to select first numeric tag if no bytes tag
	for _, s := range prof.Sample {
		numLabels := make(map[string][]int64, len(s.NumLabel))
		numUnits := make(map[string][]string, len(s.NumLabel))
		for k, vs := range s.NumLabel {
			if k == "bytes" {
				unit := o.NumLabelUnits[k]
				numValues := make([]int64, len(vs))
				numUnit := make([]string, len(vs))
				for i, v := range vs {

				if n == nil {
					continue
				}
				n.addSample(dw, w, labels, sample.NumLabel, sample.NumUnit, o.FormatTag, false)
				if parent != nil {
					parent.AddToEdgeDiv(n, dw, w, false, lidx != len(lines)-1)
				}
				parent = n
			}
		}
		if parent != nil {
			parent.addSample(dw, w, labels, sample.NumLabel, sample.NumUnit, o.FormatTag, true)
		}
	}

	nodes := make(Nodes, 0, len(prof.Location))

			switch pType {
			case "heap":
				const javaHeapzSamplingRate = 524288 // 512K
				if s.Value[0] == 0 {
					return nil, nil, fmt.Errorf("parsing sample %s: second value must be non-zero", line)
				}
				s.NumLabel = map[string][]int64{"bytes": {s.Value[1] / s.Value[0]}}
				s.Value[0], s.Value[1] = scaleHeapSample(s.Value[0], s.Value[1], javaHeapzSamplingRate)
			case "contention":
				if period := p.Period; period != 0 {

				}
				p.Location = append(p.Location, loc)
				locs[addr] = loc
			}
			sloc = append(sloc, loc)
		}

		p.Sample = append(p.Sample, &Sample{
			Value:    value,
			Location: sloc,
			NumLabel: map[string][]int64{"bytes": {blocksize}},
		})
	}
	if err := s.Err(); err != nil {
		return nil, err
	}
	if err := parseAdditionalSections(s, p); err != nil {
		return nil, err
	}
	return p, nil