perfetto

Documentation

Overview

Package perfetto contains helper functions and constants to record traces and run metrics with perfetto protobufs.

Index

• Constants
• func RunMetrics(ctx context.Context, traceProcessorPath, outputPath string, metrics []string) (*perfetto_proto.TraceMetrics, error)
• func RunPerfetto(ctx context.Context, pc platform.PerfettoTraceBasedMetricsServiceClient, ...) (ret string, retErr error)

Constants

const (
	// TraceProcessor is retrieved from the script in
	// https://get.perfetto.dev/trace_processor, with "os" being "linux"
	// and "arch" being "x86_64".
	// We download trace_processor_shell from gs bucket "perfetto".
	// Update the external data file correspondingly when we need to
	// uprev trace_processor_shell.
	TraceProcessor = "trace_processor_shell-linux-a3ce2cbf4cbe4f86cc10b02957db727cecfafae8"
)

Functions

func RunMetrics

func RunMetrics(ctx context.Context, traceProcessorPath, outputPath string, metrics []string) (*perfetto_proto.TraceMetrics, error)

RunMetrics collects the result with trace_processor_shell.

func RunPerfetto

func RunPerfetto(ctx context.Context, pc platform.PerfettoTraceBasedMetricsServiceClient, traceConfigPath string) (ret string, retErr error)

RunPerfetto uses gRPC to run perfetto cmdline with |traceConfigFile| in the DUT.