How Netflix Serves 400Gbps From One FreeBSD Server

EuroBSDCon · Talk · 48 min · 2021 · YouTube title: Serving Netflix Video at 400Gbps on FreeBSD by Drew Gallatin

Why it's here

HN cites it as a prime example of FreeBSD tuned for extreme network performance at massive scale.

What it covers

Netflix engineer Drew Gallatin explains how Netflix serves TLS-encrypted video at 400Gb/s from a single FreeBSD server. He covers NUMA, kernel TLS, hardware TLS offload and the memory bandwidth and PCIe bottlenecks they hit.