Oops, I was actually replying to the parent post about benchmarks from 2008.

https://www.dragonflybsd.org/performance/ Has one from 2012 and an update 2018 with a Threadripper 2990WX, though there is no comparison chart..

Oh.. here is a benchmark [0] from 2021, Dragonfly performs comparably with Ubuntu and FreeBSD 13 on an intel core i9 of some type. I have no idea whether these benchmarks reflect real world performance. I also don't know where and how much Dragonfly is used in 'production'.

[0] https://www.phoronix.com/review/corei9-freebsd13-dfly6