There are still some companies using FreeBSD. At Netflix, we serve a large percentage of the internet's traffic using our Open Connect CDN, which runs FreeBSD-

There are still some companies using FreeBSD. At Netflix, we serve a large percentage of the internet's traffic using our Open Connect CDN, which runs FreeBSD-current. WRT to the C10K problem mentioned below... We find FreeBSD scales quite well to at least several hundred thousand connections. Our largest experimental machines can serve nearly 400Gb/s of real customer traffic across hundreds of thousands of TCP conns from a single-socket AMD Rome. This is all with a "traditional" kernel-based workflow, serving media files with sendfile, and doing encryption of HTTPS traffic via kTLS (with NIC-based hardware TLS offload in this case). There is no DPDK or other userspace networking or storage.