This directory contains the definition of a program that measures the timing and resource consumption of a test tracing scenario.

The benchmark uses Google Benchmark, whose source is included as a git submodule under ./google-benchmark.

The scenario that's measured is similar to the ../examples/hasher setup. A trace is created whose structure reflects that of a particular file directory structure. The directory structure, in this case, is the source tree of the Tiny C Compiler, whose source is included as a git submodule under ./tinycc.

The scenario does not use the network, spawn any threads, or read/write any files. The operations that are implicitly covered by the scenario are:

• configuring and initializing a tracer,
• creating a trace,
• adding spans to a trace,
• setting tags on spans,
• finishing spans,
• finalizing a trace and making a sampling decision,
• serializing a trace as MessagePack.

../bin/benchmark is a script that builds dd-trace-cpp, this benchmark, and then runs the benchmark.

This benchmark is intended to be driven by Datadog's internal benchmarking platform. See ../.gitlab/benchmarks.yml.