Talk by Brendan Gregg for All Things Open 2018. "At over one thousand code commits per week, it's hard to keep up with Linux developments. This keynote will summarize recent Linux performance features, for a wide audience: the KPTI patches for Meltdown, eBPF for performance observability and the new open source tools that use it, Kyber for disk I/O sc heduling, BBR for TCP congestion control, and more. This is about exposure: knowing what exists, so you can learn and use it later when needed. Get the most out of your systems with the latest Linux kernels and exciting features."