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bencheeorg/benchee

Benchee is a benchmarking library for Elixir that provides a high-level API for running and reporting on performance tests. It measures execution time, memory usage, and function call overhead, while also supporting parallel execution and statistical outlier removal. The system features a modular architecture for collecting metrics, converting units, and formatting results to the console or save files. Comprehensive test coverage ensures the reliability of its benchmarking, profiling, and output formatting capabilities.

70.2

Strong · 6 August 2026

7.2k

lines of production code

Elixir

primary language

1

bus factor · 45 authors in all

4

measurements over time

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How it got here

2016 · API modernization and internal refactoring

This period focused on modernizing Benchee's public API with high-level convenience functions and a pluggable unit conversion system. The internal architecture was significantly refactored to support new benchmarking features like parallel execution, memory measurement, and profiling, accompanied by comprehensive test coverage for the new modules.

15 changes

2017–2026 · Benchmarking and output refactoring

This period focused on restructuring Benchee's internal architecture to support new measurement capabilities, specifically tracking memory usage, function call overhead, and BEAM reductions. The codebase was refactored into modular components for benchmarking, collection, and console formatting, accompanied by comprehensive test coverage for these new features.

11 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 6 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 55a5e6049e — the exact code this score is about.
  • Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.
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