# wg/wrk

Modern HTTP benchmarking tool

Repository: https://github.com/wg/wrk
Canonical: https://ross.abutalabs.com/products/wrk
Language: C
License: NOASSERTION
License Family: other
Last push: 2023-12-30T10:33:51+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5279, "days_push": 977, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 40394, forks 3033 (observed 2026-08-28T04:12:08.230160+00:00)

## What it is
wrk is a modern HTTP benchmarking tool that generates significant load from a single multi-core machine using a multithreaded design with epoll/kqueue event notification. It supports optional LuaJIT scripting for custom request generation, response processing, and reporting.

## Use cases
- load test an HTTP API with thousands of concurrent connections
- measure requests per second and latency of a web server
- benchmark before and after a performance optimization
- generate custom HTTP requests via Lua scripts for load testing
- stress test a service endpoint for a fixed duration

## When to choose
- you need high-throughput HTTP load generation on a single multi-core machine
- you want detailed latency statistics from a lightweight CLI tool
- you need scripted, customizable benchmark scenarios via LuaJIT

## When to avoid
- you need distributed load generation across multiple machines
- you need a browser-realistic or protocol-rich testing tool (e.g., WebSockets, HTTP/2, JS execution)
- you want a GUI or record-and-replay workflow

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: benchmarking, http-client, load-testing
- domain: developer-tools, performance, web-development, testing
- platform: cli, cross-platform
- tags: http-benchmarking, load-generator, luajit-scripting, stress-testing, linux, macos

## Member repositories
- wg/wrk (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:12:08.230160+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:24:04.246438+00:00, confidence not recorded.
  - readme: https://github.com/wg/wrk (fetched 2026-08-28T04:12:08.230160+00:00, sha f4b5ded7d352)
- Data as of 2026-08-30T08:39:29.467469+00:00.