[Octave-bug-tracker] [bug #60005] Flame graphs for profiler output

[CH]

URL:
  <https://savannah.gnu.org/bugs/?60005>

                 Summary: Flame graphs for profiler output
                 Project: GNU Octave
            Submitted by: atcl
            Submitted on: Thu 04 Feb 2021 07:43:46 PM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: Any

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Details:

MATLAB has a flame graph visualization since 2020a. Way before, in January
2019, I wrote a flame graph visualization for Octave's profiler output, see:

https://git.io/flamegraph

It uses text box annotations for the flames, and recursively traverses the
profile data. Thus, it is rather slow and requires a lot of memory.

I would be happy if this could be the basis for a flame graph visualization in
Octave, but I lack understanding of the Octave internals to accelerate this
code. Maybe doing this inside a plot is the wrong approach altogether, but it
seems convenient; or there may be a more efficient way to draw the boxes?




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