SUMMARY It would be very helpful to be able to recalculate the graphs based on a timeline selection, especially the flamegraph and bottom-up/top-down trees. While the elapse time allocation graphs provide some of this information, they're missing the stack detail, and fine grained detail of the flame graph. For comparison the CPU profile viewer, Hotspot, has such an ability for viewing time, CPU, and thread data subsets, which makes it possible to analyze situations that are otherwise infeasible.
Looks like you're already working on this, what timing! : ) I see something in 019a87c that seems like it might be on the way. Let me know if I can do anything to help.
Hey Andrew, perfect timing indeed. I have had this in my mind for years, but never got around to sit down and actually implement it. you can now select a time range in the charts (click-and-drag), and then use the context menu to filter in on that selected range. Please try it out and give me feedback :) Either here or via email. I'll close this report, if you encounter any bugs, please open new individual issues for them. Thanks!