hackertube.io

FreeBSD optimizations used by Netflix serving at 800Gb/s - Drew Gallatin - EuroBSDcon 2022

EuroBSDCon · talk · Watch on YouTube

Operating systems & kernelsNetworking & internet infrastructureSoftware performance & optimization

What it is

Netflix engineer Drew Gallatin's EuroBSDcon 2022 talk quantifies the older FreeBSD optimizations that let Netflix serve web traffic at 800Gb/s, including TSO, LRO, VM page cache zones, asynchronous sendfile and unmapped mbufs.

Why Hacker News recommends it

HN points to it as the recorded talk behind the Netflix 800Gb/s slides and as a deep look at kernel-level optimizations for high throughput.

  • 2 people recommended it
  • 2 different months
  • 0 strong recommendations
  • first 2022, last 2025

What HN commenters said

  1. “Some really great talks this year from all the *BSDs, highly recommend checking a look”

    EuroBSDcon talk recording on Netflix FreeBSD optimizations.

    notaplumber1, 2022-11 · Recommendation · in “FreeBSD optimizations used by Netflix to serve video at 800Gb/s [pdf]”

  2. “this might be a little lower level that you may be interested in as it relates to kernel optimizations to jack bit throughput rates”

    Netflix kernel-level optimizations for high throughput.

    thomasjudge, 2023-10 · Recommendation · in “Video Streaming at Scale with Kubernetes and RabbitMQ”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: freebsd, netflix, ktls, tcp offload, performance, sendfile

Also recommended by the same people