eliot2flamegraph

[itamarst]

Emit output that can be input into https://github.com/brendangregg/FlameGraph for visualizing performance.

[itamarst]

We can probably generate Pstats and then use existing library (https://github.com/baverman/flameprof) to turn that into flamegraph.

Also, a simpler algorithm than current branch (I think?) is "ParsedAction.end_time_recursive() is max of actual end time and sub-trees' end_time_recursive()", and then you just generate callgraph for Pstats.