Author here... Yes, most of this work was done by me, with help from a handful of us on the OCA kernel team at Netflix (and external FreeBSD developers), and our vendor partners (Mellanox/NVIDIA).

With that said, we are standing on the shoulders of giants. There are tons of other optimizations not mentioned in this talk where removing any one of them could tank performance. I'm giving a talk about that at EuroBSDCon next month.