#1 Drillable Histograms

[Anonymous]

It would be nice to be able to "drill down" a Histogram showing durations of a UnionTimeInterval streams so that the categories were automagically derived from the categories of the underlying streams.

Not entirely trivial, because you want to preserve the values in the histogram (if at the top level a time interval is of length 200, but at the next level of details it is actually the union of a 150 and 50 that were unioned into a single interval, we want to show that as an interval of length 200, but marked as belonging to both categories (or to the A&B category).

Motivating example: GC Slice Duration by Phase.

[Dave Grove]

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feature request from me; I wasn't paying enough attention and didn't realize I wasn't logged in.