https://events.linuxfoundation.org/images/stories/pdf/lfcs2012_melo.pdf http://video.linux.com/videos/the-linux-perf-tools-overview-and-developments https://events.linuxfoundation.org/images/stories/pdf/lfcs2012_weisbecker.pdf http://video.linux.com/videos/stacktraces--callchains-in-perf-events
