[doctorsher]

I couldn't agree more; Brendan Gregg is awesome. I finally created an account just to say this. His materials on Linux performance analysis and monitoring[0] are phenomenal. The analysis and observability maps he made are quite helpful to see the big picture and put specific tools in their proper context. I also particularly appreciate his materials on perf.

Maybe I'm being too much of a fanboy, but I appreciate good materials when I come across them.

[0] http://www.brendangregg.com/linuxperf.html