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profile tree dot notation #592

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akvlad opened this issue Oct 21, 2024 · 0 comments

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akvlad commented Oct 21, 2024 •

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What

Implement dot notation for profile trees.

Why

#576 this particular bug happens because the "Explain" button requires "dot" notation which is not implemented.

How

Dot notation is a human-readable graph representation
https://en.wikipedia.org/wiki/DOT_(graph_description_language)
https://graphviz.org/doc/info/lang.html

The pyrosope implementation of dot is located in https://github.com/grafana/pyroscope/tree/main/pkg/frontend/dot/graph .
An example of a dot graph: example_gv.txt
Description of a graph: https://github.com/google/pprof/blob/main/doc/README.md#graphical-reports
Online dot graph viewer: https://dreampuf.github.io/GraphvizOnline/

For now let's omit

coloring
dotted lines

And implement the tree rendering method of a profile.

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