There are several people named Brendan Gregg. This one is me (2011):

Conferences often ask for a head shot, so I'll share them here. Here's one from 2017 SREcon, which is also my avatar (thanks LinkedIn):

I previously used my 2013 Velocity conf photo (credit Trav Williams, Broken Banjo Photography):

Others that I used at some point: 2012.

For an amusing older photo, here I am fooling around with data center safety clothing, seated at a text console in (I think) 2001:

For another amusing picture, in 2006 I was accused of being a group of clones (due to the volume of software I was writing); so I created this:

Last updated: 14-Jun-2018