profile

package
v0.22.0 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Aug 9, 2024 License: Apache-2.0 Imports: 15 Imported by: 2

Documentation

Index

Constants

View Source 
const (
	ColumnLabelsPrefix      = ColumnLabels + "."
	ColumnPprofLabelsPrefix = ColumnPprofLabels + "."
)
View Source 
const (
	SchemaName = "parca"
	// The columns are sorted by their name in the schema too.
	ColumnDuration       = "duration"
	ColumnLabels         = "labels"
	ColumnName           = "name"
	ColumnPeriod         = "period"
	ColumnPeriodType     = "period_type"
	ColumnPeriodUnit     = "period_unit"
	ColumnPprofLabels    = "pprof_labels"
	ColumnPprofNumLabels = "pprof_num_labels"
	ColumnSampleType     = "sample_type"
	ColumnSampleUnit     = "sample_unit"
	ColumnStacktrace     = "stacktrace"
	ColumnTimestamp      = "timestamp"
	ColumnValue          = "value"
)
View Source 
const (
	MaxVal9 = maxUint64 >> (1 + iota*7)
	MaxVal8
	MaxVal7
	MaxVal6
	MaxVal5
	MaxVal4
	MaxVal3
	MaxVal2
	MaxVal1
)

MaxValN is the maximum varint-encoded integer that fits in N bytes.

Variables

View Source 
var LocationsField = arrow.Field{
	Name: "locations",
	Type: arrow.ListOf(arrow.StructOf([]arrow.Field{{
		Name: "address",
		Type: arrow.PrimitiveTypes.Uint64,
	}, {
		Name: "mapping_start",
		Type: arrow.PrimitiveTypes.Uint64,
	}, {
		Name: "mapping_limit",
		Type: arrow.PrimitiveTypes.Uint64,
	}, {
		Name: "mapping_offset",
		Type: arrow.PrimitiveTypes.Uint64,
	}, {
		Name: "mapping_file",
		Type: &arrow.DictionaryType{IndexType: arrow.PrimitiveTypes.Uint32, ValueType: arrow.BinaryTypes.Binary},
	}, {
		Name: "mapping_build_id",
		Type: &arrow.DictionaryType{IndexType: arrow.PrimitiveTypes.Uint32, ValueType: arrow.BinaryTypes.Binary},
	}, {
		Name: "lines",
		Type: arrow.ListOf(arrow.StructOf([]arrow.Field{{
			Name: "line",
			Type: arrow.PrimitiveTypes.Int64,
		}, {
			Name: "function_name",
			Type: &arrow.DictionaryType{IndexType: arrow.PrimitiveTypes.Uint32, ValueType: arrow.BinaryTypes.Binary},
		}, {
			Name: "function_system_name",
			Type: &arrow.DictionaryType{IndexType: arrow.PrimitiveTypes.Uint32, ValueType: arrow.BinaryTypes.Binary},
		}, {
			Name: "function_filename",
			Type: &arrow.DictionaryType{IndexType: arrow.PrimitiveTypes.Uint32, ValueType: arrow.BinaryTypes.Binary},
		}, {
			Name: "function_start_line",
			Type: arrow.PrimitiveTypes.Int64,
		}}...)),
	}}...)),
}

Functions

func ArrowSamplesField added in v0.19.0 

func ArrowSamplesField(profileLabelFields []arrow.Field) []arrow.Field

func ArrowSchema added in v0.19.0 

func ArrowSchema(profileLabelFields []arrow.Field) *arrow.Schema

func EncodeArrowLocation added in v0.22.0 

func EncodeArrowLocation(
	address uint64,
	hasMapping bool,
	mappingStart uint64,
	mappingLimit uint64,
	mappingOffset uint64,
	mappingFile []byte,
	buildID []byte,
	linesStartOffset int,
	linesEndOffset int,
	lines *array.List,
	line *array.Struct,
	lineNumber *array.Int64,
	lineFunctionName *array.Dictionary,
	lineFunctionNameDict *array.Binary,
	lineFunctionSystemName *array.Dictionary,
	lineFunctionSystemNameDict *array.Binary,
	lineFunctionFilename *array.RunEndEncoded,
	lineFunctionFilenameDict *array.Dictionary,
	lineFunctionFilenameDictValues *array.Binary,
	lineFunctionStartLine *array.Int64,
) []byte

func EncodeOtelLocation added in v0.22.0 

func EncodeOtelLocation(
	l *pprofextended.Location,
	m *pprofextended.Mapping,
	funcs []*pprofextended.Function,
	stringTable []string,
) []byte

func EncodePprofLocation added in v0.22.0 

func EncodePprofLocation(
	l *pprofpb.Location,
	m *pprofpb.Mapping,
	funcs []*pprofpb.Function,
	stringTable []string,
) []byte

func LocationsArrowSchema added in v0.19.0 

func LocationsArrowSchema() *arrow.Schema

func Schema added in v0.19.0 

func Schema() (*dynparquet.Schema, error)

func SchemaDefinition added in v0.19.0 

func SchemaDefinition() *schemapb.Schema

func UvarintSize added in v0.22.0 

func UvarintSize(x uint64) int

UvarintSize returns the number of bytes necessary to encode a given uint. Unfortunately the standard lib does not provide this function, so we create it here.

Types

type DecodeResult added in v0.22.0 

type DecodeResult struct {
	WroteLines bool
	BuildID    []byte
	Addr       uint64
	Mapping    Mapping
}

func DecodeInto added in v0.22.0 

func DecodeInto(lw LocationsWriter, data []byte) (DecodeResult, error)

type Demangler added in v0.22.0 

type Demangler interface {
	Demangle(name []byte) string
}

type ExecutableInfo added in v0.22.0 

type ExecutableInfo struct {
	ElfType          elf.Type
	TextProgHdrIndex int16
	ProgHeaders      []ProgHeader
}

func ExecutableInfoFromELF added in v0.22.0 

func ExecutableInfoFromELF(f *elf.File) (ExecutableInfo, error)

func (ExecutableInfo) FindProgramHeader added in v0.22.0 

func (ei ExecutableInfo) FindProgramHeader(m Mapping, addr uint64) (*ProgHeader, error)

FindProgramHeader returns the program segment that matches the current mapping and the given address, or an error if it cannot find a unique program header.

type Label added in v0.12.0 

type Label struct {
	Name  string
	Value string
}

type LabelColumn added in v0.19.0 

type LabelColumn struct {
	Col  *array.Uint32
	Dict *array.Binary
}

type Location added in v0.12.0 

type Location struct {
	ID       string
	Address  uint64
	IsFolded bool
	Mapping  *pb.Mapping
	Lines    []LocationLine
}

type LocationLine added in v0.12.0 

type LocationLine struct {
	Line     int64
	Function *pb.Function
}

type LocationsWriter added in v0.19.0 

type LocationsWriter struct {
	RecordBuilder      *array.RecordBuilder
	LabelBuildersMap   map[string]*array.BinaryDictionaryBuilder
	LabelBuilders      []*array.BinaryDictionaryBuilder
	LocationsList      *array.ListBuilder
	Locations          *array.StructBuilder
	Addresses          *array.Uint64Builder
	MappingStart       *array.Uint64Builder
	MappingLimit       *array.Uint64Builder
	MappingOffset      *array.Uint64Builder
	MappingFile        *array.BinaryDictionaryBuilder
	MappingBuildID     *array.BinaryDictionaryBuilder
	Lines              *array.ListBuilder
	Line               *array.StructBuilder
	LineNumber         *array.Int64Builder
	FunctionName       *array.BinaryDictionaryBuilder
	FunctionSystemName *array.BinaryDictionaryBuilder
	FunctionFilename   *array.BinaryDictionaryBuilder
	FunctionStartLine  *array.Int64Builder
	Value              *array.Int64Builder
	Diff               *array.Int64Builder
}

func NewLocationsWriter added in v0.19.0 

func NewLocationsWriter(pool memory.Allocator) LocationsWriter

type Mapping added in v0.22.0 

type Mapping struct {
	StartAddr uint64
	EndAddr   uint64
	Offset    uint64
	File      string
}

type Meta added in v0.12.0 

type Meta struct {
	Name       string
	PeriodType ValueType
	SampleType ValueType
	Timestamp  int64
	Duration   int64
	Period     int64
}

func MetaFromPprof added in v0.8.0 

func MetaFromPprof(p *pprofproto.Profile, name string, sampleIndex int) Meta

type NormalizedProfile added in v0.12.0 

type NormalizedProfile struct {
	Samples []*NormalizedSample
	Meta    Meta
}

type NormalizedSample added in v0.12.0 

type NormalizedSample struct {
	StacktraceID string
	Value        int64
	DiffValue    int64
	Label        map[string]string
	NumLabel     map[string]int64
}

type NumLabel added in v0.12.0 

type NumLabel struct {
	Name  string
	Value int64
}

type OldProfile added in v0.19.0 

type OldProfile struct {
	Meta    Meta
	Samples []*SymbolizedSample
}

type Profile added in v0.9.0 

type Profile struct {
	Samples []arrow.Record
	Meta    Meta
}

type ProgHeader added in v0.22.0 

type ProgHeader struct {
	Off   uint64
	Vaddr uint64
	Memsz uint64
}

A ProgHeader represents a single ELF program header.

type Reader added in v0.19.0 

type Reader struct {
	Profile       Profile
	RecordReaders []*RecordReader
}

func NewReader added in v0.19.0 

func NewReader(p Profile) Reader

type RecordReader added in v0.19.0 

type RecordReader struct {
	Record arrow.Record

	LabelFields  []arrow.Field
	LabelColumns []LabelColumn

	Locations                     *array.List
	Location                      *array.Struct
	Address                       *array.Uint64
	MappingStart                  *array.Uint64
	MappingLimit                  *array.Uint64
	MappingOffset                 *array.Uint64
	MappingFileIndices            *array.Uint32
	MappingFileDict               *array.Binary
	MappingBuildIDIndices         *array.Uint32
	MappingBuildIDDict            *array.Binary
	Lines                         *array.List
	Line                          *array.Struct
	LineNumber                    *array.Int64
	LineFunctionNameIndices       *array.Uint32
	LineFunctionNameDict          *array.Binary
	LineFunctionSystemNameIndices *array.Uint32
	LineFunctionSystemNameDict    *array.Binary
	LineFunctionFilenameIndices   *array.Uint32
	LineFunctionFilenameDict      *array.Binary
	LineFunctionStartLine         *array.Int64

	Value *array.Int64
	Diff  *array.Int64
}

func NewRecordReader added in v0.19.0 

func NewRecordReader(ar arrow.Record) *RecordReader

type SymbolizationInfo added in v0.22.0 

type SymbolizationInfo struct {
	Addr    uint64
	BuildID []byte
	Mapping Mapping
}

func DecodeSymbolizationInfo added in v0.22.0 

func DecodeSymbolizationInfo(data []byte) (SymbolizationInfo, uint64)

type SymbolizedSample added in v0.12.0 

type SymbolizedSample struct {
	Locations []*Location
	Value     int64
	DiffValue int64
	Label     map[string]string
	NumLabel  map[string]int64
}

type ValueType 

type ValueType struct {
	Type string
	Unit string
}

type Writer added in v0.19.0 

type Writer struct {
	RecordBuilder      *array.RecordBuilder
	LabelBuildersMap   map[string]*array.BinaryDictionaryBuilder
	LabelBuilders      []*array.BinaryDictionaryBuilder
	LocationsList      *array.ListBuilder
	Locations          *array.StructBuilder
	Addresses          *array.Uint64Builder
	MappingStart       *array.Uint64Builder
	MappingLimit       *array.Uint64Builder
	MappingOffset      *array.Uint64Builder
	MappingFile        *array.BinaryDictionaryBuilder
	MappingBuildID     *array.BinaryDictionaryBuilder
	Lines              *array.ListBuilder
	Line               *array.StructBuilder
	LineNumber         *array.Int64Builder
	FunctionName       *array.BinaryDictionaryBuilder
	FunctionSystemName *array.BinaryDictionaryBuilder
	FunctionFilename   *array.BinaryDictionaryBuilder
	FunctionStartLine  *array.Int64Builder
	Value              *array.Int64Builder
	Diff               *array.Int64Builder
}

func NewWriter added in v0.19.0 

func NewWriter(pool memory.Allocator, labelNames []string) Writer

func (*Writer) Release added in v0.21.0 

func (w *Writer) Release()

Source Files

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