stress-ng

Funny that it talks about matrixprod, which I think is not that relevant as benchmark — unless you care about x87 performance specifically. I recently sent a pull request to try to address that in a generic manner: https://github.com/ColinIanKing/stress-ng/pull/561 Yet I'm still surprised by this benchmark. On both Zen2 and Zen4 in my tests (5900X from the article is Zen3), matrixprod still benefits from hyperthreading and scales a bit after all the physical cores are filled, unlike what the article results show. All of this is tangential of course, as I'd tend to agree that CPU utilization% is just an imprecise metric and should only be used as a measure of "is something running".

One can also just use stress-ng [0], which is packaged in pretty much any distro. [0] https://github.com/ColinIanKing/stress-ng