Tachometer – Statistically rigorous benchmark runner for the web

From the Polymer team:

Tachometer is a tool for running benchmarks in web browsers. It uses repeated sampling and statistics to reliably identify even tiny differences in runtime.

To compare two files, run it like so:

npx tachometer variant1.html variant2.html

Tachometer will open Chrome and load each HTML file, measuring the time between bench.start() and bench.stop() that you need to add to your code. It round-robins between the files, running each at least 50 times, and will output a comparison table.

What’s very interesting is that it has support for swapping NPM dependencies, so that you can measure how these impact performance. Tachometer comes with WebDriver plugins for Chrome, Safari, Firefox, and Internet Explorer.

Tachometer →

About the author

Bramus is a Freelance Web Developer from Belgium. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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