hyperfine

A command-line benchmarking tool with statistical analysis

Development Productivity linuxmacoswindows Rust MIT

Description

hyperfine is a benchmarking tool for command-line programs. It runs commands multiple times, performs statistical analysis, supports warmup runs, and can export results in various formats for comparison.

Install

homebrewbrew install hyperfine

cargocargo install hyperfine

aptsudo apt install hyperfine

pacmansudo pacman -S hyperfine

AI Summary

A command-line benchmarking tool with statistical analysis. Runs commands multiple times, performs warmup runs, detects outliers, and supports comparative benchmarking.

Capabilities

+ Statistical analysis with mean, stddev, min, max
+ Warmup runs and cache clearing between runs
+ Side-by-side comparison of multiple commands
+ Export results as JSON, CSV, or Markdown

Use When

→ Benchmarking CLI commands or scripts
→ Comparing performance of alternative tools or approaches
→ Need statistically rigorous timing measurements

Avoid When

x Profiling code internals (use a language-specific profiler)
x One-off timing where shell 'time' suffices

Usage Patterns

Benchmark a single command

hyperfine 'fd -e py'

Runs the command multiple times and shows statistical summary

Compare two commands

hyperfine 'find . -name "*.py"' 'fd -e py'

Benchmarks both commands and shows relative performance

Input / Output

stdout: Statistical summary with timing results

Exit codes:

0 Success

1 Error

View AGENTS.md for hyperfine