Methods
Tracing.start #
Start trace events collection.
Tracing.start support is experimental.
Parameters
categoriesOptional
stringCategory/tag filter
optionsOptional
stringTracing options
bufferUsageReportingIntervalOptional
numberIf set, the agent will issue bufferUsage events at this interval, specified in milliseconds
transferModeOptional
stringWhether to report trace events as series of dataCollected events or to save trace to a
stream (defaults to ReportEvents).
Allowed values: ReportEvents, ReturnAsStream
streamFormatOptional
Trace data format to use. This only applies when using ReturnAsStream
transfer mode (defaults to json).
streamCompressionOptional
Compression format to use. This only applies when using ReturnAsStream
transfer mode (defaults to none)
traceConfigOptional
perfettoConfigOptional
stringBase64-encoded serialized perfetto.protos.TraceConfig protobuf message
When specified, the parameters categories, options, traceConfig
are ignored. (Encoded as a base64 string when passed over JSON)
tracingBackendOptional