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.

When to use this tool

✓ Good fit when

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

✕ Avoid when

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

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