Brendan Gregg is an industry expert in computing performance and cloud computing. He is a senior performance architect at Netflix, where he does performance design, evaluation, analysis, and tuning. The author of multiple technical books including BPF Performance Tools and Systems Performance, he received the USENIX LISA Award for Outstanding Achievement in System Administration. He has also been a kernel engineer and performance lead, and was program co-chair for the USENIX LISA 2018 conference. He has created performance tools included in multiple operating systems, and visualizations and methodologies for performance analysis, including flame graphs.

Operating system performance analysis and tuning leads to a better end-user experience and lower costs, especially for cloud computing environments that pay by the OS instance. Systems Performance, 2nd Edition covers concepts, strategy, tools and tuning for Unix operating systems, with a focus on those that are Linux- and Solaris-based.