Hyperfine — Command-Line Benchmarking Tool

brew install hyperfine                      # macOS
cargo install hyperfine                     # Rust
sudo apt install hyperfine                  # Debian/Ubuntu

# Basic benchmark
hyperfine "sleep 0.5"

# Compare two commands
hyperfine "fd pattern" "find . -name pattern"

# With warmup runs
hyperfine --warmup 3 "cargo build"

# Multiple commands with labels
hyperfine \
  -n ripgrep "rg pattern" \
  -n grep "grep -r pattern ."

# Export results
hyperfine --export-markdown results.md "rg pattern" "grep -r pattern ."
hyperfine --export-json results.json "command"

# Parameter scan
hyperfine --parameter-scan threads 1 8 "cargo build -j {threads}"

# Preparation command (runs before each)
hyperfine --prepare "sync; echo 3 | sudo tee /proc/sys/vm/drop_caches" "cat large_file"