Flame Graphs [http://www.brendangregg.com/flamegraphs.html] are a visualisation
that I learnt about through the excellent Linux systems performance work of
Brendan Gregg [http://www.brendangregg.com/], and saw Luca Canali
[https://twitter.com/lucacanalidb] talk about recently at UKOUG Tech 14
[http://tech14.ukoug.org/default.asp?