Brendan Gregg is a senior performance architect at Netflix, where he does large scale computer performance design, evaluation, analysis, and tuning. He is the author of Systems Performance published by Prentice Hall, and has created performance analysis tools included in multiple operating systems. He has previously worked as a kernel engineer and as a security consultant. As an eBPF expert, he has developed and published BPF tools for the open source bcc project, for performance, debugging, and security observability.