Brendan Gregg

Brendan Gregg is a kernel and performance engineer who worked at Sun Microsystems and later at Oracle Corporation following its acquisition by Sun. He left Oracle in October, 2010, to become the Lead Performance Engineer at Joyent. In March, 2014, he became a Senior Performance Architect at Netflix. Gregg was born in Newcastle, New South Wales and attended University of Newcastle, Australia. After working as a technical instructor for Sun Microsystems and later as a consultant, he was hired to join Sun's Fishworks team in San Francisco. Gregg is one of the leading experts on DTrace, creator of the DTraceToolkit, and author of books on DTrace and systems performance. He is also the star of the Shouting in the Data Center viral video. In November, 2013, he was awarded the LISA Outstanding Achievement Award "For contributions to the field of system administration, particularly groundbreaking work in systems performance analysis methodologies." He now investigates and writes about Linux performance on his new blog. 2Contributions Gregg has developed various methodologies for performance analysis, notably the USE Method. He has also created visualization types to aid performance analysis, including latency heat maps, utilization heat maps, subsecond offset heat maps, and flame graph