Richard McDougall is a Distinguished Engineer at Sun Microsystems, specializing in operating systems technology and systems performance.
Jim Mauro is a Senior Staff Engineer in the Performance, Architecture, and Applications Engineering group at Sun Microsystems, where his most recent efforts have focused on Solaris performance on Opteron platforms.
Brendan Gregg is a Solaris consultant and instructor teaching classes for Sun Microsystems across Australia and Asia. He is also an OpenSolaris contributor and community leader, and has written numerous software packages, including the DTraceToolkit.