Exemplo n.º 1
0
func (b *builder) tagGroupLabel(g []*Tag) (label string, flat, cum int64) {
	formatTag := b.config.FormatTag
	if formatTag == nil {
		formatTag = measurement.Label
	}

	if len(g) == 1 {
		t := g[0]
		return formatTag(t.Value, t.Unit), t.FlatValue(), t.CumValue()
	}
	min := g[0]
	max := g[0]
	df, f := min.FlatDiv, min.Flat
	dc, c := min.CumDiv, min.Cum
	for _, t := range g[1:] {
		if v, _ := measurement.Scale(t.Value, t.Unit, min.Unit); int64(v) < min.Value {
			min = t
		}
		if v, _ := measurement.Scale(t.Value, t.Unit, max.Unit); int64(v) > max.Value {
			max = t
		}
		f += t.Flat
		df += t.FlatDiv
		c += t.Cum
		dc += t.CumDiv
	}
	if df != 0 {
		f = f / df
	}
	if dc != 0 {
		c = c / dc
	}
	return formatTag(min.Value, min.Unit) + ".." + formatTag(max.Value, max.Unit), f, c
}
Exemplo n.º 2
0
// printCallgrind prints a graph for a profile on callgrind format.
func printCallgrind(w io.Writer, rpt *Report) error {
	o := rpt.options
	rpt.options.NodeFraction = 0
	rpt.options.EdgeFraction = 0
	rpt.options.NodeCount = 0

	g, _, _, _ := rpt.newTrimmedGraph()
	rpt.selectOutputUnit(g)

	fmt.Fprintln(w, "events:", o.SampleType+"("+o.OutputUnit+")")

	files := make(map[string]int)
	names := make(map[string]int)
	for _, n := range g.Nodes {
		fmt.Fprintln(w, "fl="+callgrindName(files, n.Info.File))
		fmt.Fprintln(w, "fn="+callgrindName(names, n.Info.Name))
		sv, _ := measurement.Scale(n.Flat, o.SampleUnit, o.OutputUnit)
		fmt.Fprintf(w, "%d %d\n", n.Info.Lineno, int64(sv))

		// Print outgoing edges.
		for _, out := range n.Out.Sort() {
			c, _ := measurement.Scale(out.Weight, o.SampleUnit, o.OutputUnit)
			callee := out.Dest
			fmt.Fprintln(w, "cfl="+callgrindName(files, callee.Info.File))
			fmt.Fprintln(w, "cfn="+callgrindName(names, callee.Info.Name))
			// pprof doesn't have a flat weight for a call, leave as 0.
			fmt.Fprintln(w, "calls=0", callee.Info.Lineno)
			fmt.Fprintln(w, n.Info.Lineno, int64(c))
		}
		fmt.Fprintln(w)
	}

	return nil
}
Exemplo n.º 3
0
// printCallgrind prints a graph for a profile on callgrind format.
func printCallgrind(w io.Writer, rpt *Report) error {
	o := rpt.options
	rpt.options.NodeFraction = 0
	rpt.options.EdgeFraction = 0
	rpt.options.NodeCount = 0

	g, _, _, _ := rpt.newTrimmedGraph()
	rpt.selectOutputUnit(g)

	nodeNames := getDisambiguatedNames(g)

	fmt.Fprintln(w, "positions: instr line")
	fmt.Fprintln(w, "events:", o.SampleType+"("+o.OutputUnit+")")

	objfiles := make(map[string]int)
	files := make(map[string]int)
	names := make(map[string]int)

	// prevInfo points to the previous NodeInfo.
	// It is used to group cost lines together as much as possible.
	var prevInfo *graph.NodeInfo
	for _, n := range g.Nodes {
		if prevInfo == nil || n.Info.Objfile != prevInfo.Objfile || n.Info.File != prevInfo.File || n.Info.Name != prevInfo.Name {
			fmt.Fprintln(w)
			fmt.Fprintln(w, "ob="+callgrindName(objfiles, n.Info.Objfile))
			fmt.Fprintln(w, "fl="+callgrindName(files, n.Info.File))
			fmt.Fprintln(w, "fn="+callgrindName(names, n.Info.Name))
		}

		addr := callgrindAddress(prevInfo, n.Info.Address)
		sv, _ := measurement.Scale(n.FlatValue(), o.SampleUnit, o.OutputUnit)
		fmt.Fprintf(w, "%s %d %d\n", addr, n.Info.Lineno, int64(sv))

		// Print outgoing edges.
		for _, out := range n.Out.Sort() {
			c, _ := measurement.Scale(out.Weight, o.SampleUnit, o.OutputUnit)
			callee := out.Dest
			fmt.Fprintln(w, "cfl="+callgrindName(files, callee.Info.File))
			fmt.Fprintln(w, "cfn="+callgrindName(names, nodeNames[callee]))
			// pprof doesn't have a flat weight for a call, leave as 0.
			fmt.Fprintf(w, "calls=0 %s %d\n", callgrindAddress(prevInfo, callee.Info.Address), callee.Info.Lineno)
			// TODO: This address may be in the middle of a call
			// instruction. It would be best to find the beginning
			// of the instruction, but the tools seem to handle
			// this OK.
			fmt.Fprintf(w, "* * %d\n", int64(c))
		}

		prevInfo = &n.Info
	}

	return nil
}
Exemplo n.º 4
0
func printTopProto(w io.Writer, rpt *Report) error {
	p := rpt.prof
	o := rpt.options
	g, _, _, _ := rpt.newTrimmedGraph()
	rpt.selectOutputUnit(g)

	out := profile.Profile{
		SampleType: []*profile.ValueType{
			{Type: "cum", Unit: o.OutputUnit},
			{Type: "flat", Unit: o.OutputUnit},
		},
		TimeNanos:     p.TimeNanos,
		DurationNanos: p.DurationNanos,
		PeriodType:    p.PeriodType,
		Period:        p.Period,
	}
	var flatSum int64
	for i, n := range g.Nodes {
		name, flat, cum := n.Info.PrintableName(), n.Flat, n.Cum

		flatSum += flat
		f := &profile.Function{
			ID:         uint64(i + 1),
			Name:       name,
			SystemName: name,
		}
		l := &profile.Location{
			ID: uint64(i + 1),
			Line: []profile.Line{
				{
					Function: f,
				},
			},
		}

		fv, _ := measurement.Scale(flat, o.SampleUnit, o.OutputUnit)
		cv, _ := measurement.Scale(cum, o.SampleUnit, o.OutputUnit)
		s := &profile.Sample{
			Location: []*profile.Location{l},
			Value:    []int64{int64(cv), int64(fv)},
		}
		out.Function = append(out.Function, f)
		out.Location = append(out.Location, l)
		out.Sample = append(out.Sample, s)
	}

	return out.Write(w)
}
Exemplo n.º 5
0
// ProfileLabels returns printable labels for a profile.
func ProfileLabels(rpt *Report) []string {
	label := []string{}
	prof := rpt.prof
	o := rpt.options
	if len(prof.Mapping) > 0 {
		if prof.Mapping[0].File != "" {
			label = append(label, "File: "+filepath.Base(prof.Mapping[0].File))
		}
		if prof.Mapping[0].BuildID != "" {
			label = append(label, "Build ID: "+prof.Mapping[0].BuildID)
		}
	}
	label = append(label, prof.Comments...)
	if o.SampleType != "" {
		label = append(label, "Type: "+o.SampleType)
	}
	if prof.TimeNanos != 0 {
		const layout = "Jan 2, 2006 at 3:04pm (MST)"
		label = append(label, "Time: "+time.Unix(0, prof.TimeNanos).Format(layout))
	}
	if prof.DurationNanos != 0 {
		duration := measurement.Label(prof.DurationNanos, "nanoseconds")
		totalNanos, totalUnit := measurement.Scale(rpt.total, o.SampleUnit, "nanoseconds")
		var ratio string
		if totalUnit == "ns" && totalNanos != 0 {
			ratio = "(" + percentage(int64(totalNanos), prof.DurationNanos) + ")"
		}
		label = append(label, fmt.Sprintf("Duration: %s, Total samples = %s %s", duration, rpt.formatValue(rpt.total), ratio))
	}
	return label
}
Exemplo n.º 6
0
func tagDistance(t, u *Tag) float64 {
	v, _ := measurement.Scale(u.Value, u.Unit, t.Unit)
	if v < float64(t.Value) {
		return float64(t.Value) - v
	}
	return v - float64(t.Value)
}
Exemplo n.º 7
0
func (rpt *Report) selectOutputUnit(g *graph.Graph) {
	o := rpt.options

	// Select best unit for profile output.
	// Find the appropriate units for the smallest non-zero sample
	if o.OutputUnit != "minimum" || len(g.Nodes) == 0 {
		return
	}
	var minValue int64

	for _, n := range g.Nodes {
		nodeMin := abs64(n.Flat)
		if nodeMin == 0 {
			nodeMin = abs64(n.Cum)
		}
		if nodeMin > 0 && (minValue == 0 || nodeMin < minValue) {
			minValue = nodeMin
		}
	}
	maxValue := rpt.total
	if minValue == 0 {
		minValue = maxValue
	}

	if r := o.Ratio; r > 0 && r != 1 {
		minValue = int64(float64(minValue) * r)
		maxValue = int64(float64(maxValue) * r)
	}

	_, minUnit := measurement.Scale(minValue, o.SampleUnit, "minimum")
	_, maxUnit := measurement.Scale(maxValue, o.SampleUnit, "minimum")

	unit := minUnit
	if minUnit != maxUnit && minValue*100 < maxValue && o.OutputFormat != Callgrind {
		// Minimum and maximum values have different units. Scale
		// minimum by 100 to use larger units, allowing minimum value to
		// be scaled down to 0.01, except for callgrind reports since
		// they can only represent integer values.
		_, unit = measurement.Scale(100*minValue, o.SampleUnit, "minimum")
	}

	if unit != "" {
		o.OutputUnit = unit
	} else {
		o.OutputUnit = o.SampleUnit
	}
}
Exemplo n.º 8
0
func tagGroupLabel(g []*Tag) (label string, flat, cum int64) {
	if len(g) == 1 {
		t := g[0]
		return measurement.Label(t.Value, t.Unit), t.Flat, t.Cum
	}
	min := g[0]
	max := g[0]
	f := min.Flat
	c := min.Cum
	for _, t := range g[1:] {
		if v, _ := measurement.Scale(t.Value, t.Unit, min.Unit); int64(v) < min.Value {
			min = t
		}
		if v, _ := measurement.Scale(t.Value, t.Unit, max.Unit); int64(v) > max.Value {
			max = t
		}
		f += t.Flat
		c += t.Cum
	}
	return measurement.Label(min.Value, min.Unit) + ".." + measurement.Label(max.Value, max.Unit), f, c
}
Exemplo n.º 9
0
// parseTagFilterRange returns a function to checks if a value is
// contained on the range described by a string. It can recognize
// strings of the form:
// "32kb" -- matches values == 32kb
// ":64kb" -- matches values <= 64kb
// "4mb:" -- matches values >= 4mb
// "12kb:64mb" -- matches values between 12kb and 64mb (both included).
func parseTagFilterRange(filter string) func(int64, string) bool {
	ranges := tagFilterRangeRx.FindAllStringSubmatch(filter, 2)
	if len(ranges) == 0 {
		return nil // No ranges were identified
	}
	v, err := strconv.ParseInt(ranges[0][1], 10, 64)
	if err != nil {
		panic(fmt.Errorf("Failed to parse int %s: %v", ranges[0][1], err))
	}
	scaledValue, unit := measurement.Scale(v, ranges[0][2], ranges[0][2])
	if len(ranges) == 1 {
		switch match := ranges[0][0]; filter {
		case match:
			return func(v int64, u string) bool {
				sv, su := measurement.Scale(v, u, unit)
				return su == unit && sv == scaledValue
			}
		case match + ":":
			return func(v int64, u string) bool {
				sv, su := measurement.Scale(v, u, unit)
				return su == unit && sv >= scaledValue
			}
		case ":" + match:
			return func(v int64, u string) bool {
				sv, su := measurement.Scale(v, u, unit)
				return su == unit && sv <= scaledValue
			}
		}
		return nil
	}
	if filter != ranges[0][0]+":"+ranges[1][0] {
		return nil
	}
	if v, err = strconv.ParseInt(ranges[1][1], 10, 64); err != nil {
		panic(fmt.Errorf("Failed to parse int %s: %v", ranges[1][1], err))
	}
	scaledValue2, unit2 := measurement.Scale(v, ranges[1][2], unit)
	if unit != unit2 {
		return nil
	}
	return func(v int64, u string) bool {
		sv, su := measurement.Scale(v, u, unit)
		return su == unit && sv >= scaledValue && sv <= scaledValue2
	}
}