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 multiple technical books including Systems Performance published by Prentice Hall, and received the USENIX LISA Award for Outstanding Achievement in System Administration. He was previously a performance lead and kernel engineer at Sun Microsystems, where he developed the ZFS L2ARC and led performance investigations. He has also created numerous performance analysis tools, which have been included in multiple operating systems. His recent work includes developing methodologies and visualizations for performance analysis.