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feat: add stacks and flamegraph commands #391

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Merged
Byron merged 2 commits into from
Aug 31, 2026
Merged

feat: add stacks and flamegraph commands #391

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6f797d6
feat: add `stacks` and `flamegraph` commands
Byron Aug 31, 2026
3876367
feat: configure flamegraph SVG rendering
Byron Aug 31, 2026
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92 changes: 90 additions & 2 deletions Cargo.lock
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4 changes: 2 additions & 2 deletions Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,6 @@ tui-crossplatform = [
"crossterm",
"dep:signal-hook",
"tui",
"open",
"unicode-segmentation",
"unicode-width",
]
Expand All @@ -66,6 +65,7 @@ byte-unit = { version = "5.2.5", features = ["u128"] }
itertools = "0.15.0"
num_cpus = "1.10.0"
anyhow = "1.0.31"
inferno = { version = "0.12.8", default-features = false }
trash = { version = "5.2.0", optional = true, default-features = false, features = [
"coinit_apartmentthreaded", "chrono"
] }
Expand All @@ -78,7 +78,7 @@ crossterm = { version = "0.29.0", optional = true }
tui = { package = "ratatui", version = "0.30.2", optional = true, default-features = false, features = [
"crossterm",
] }
open = { version = "5.0", optional = true }
open = "5.0"
wild = "2.0.4"
owo-colors = "4.0.0"
human_format = "1.0.3"
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17 changes: 12 additions & 5 deletions README.md
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Expand Up @@ -245,13 +245,20 @@ LANG=ja_JP.UTF-8 dua i # then press '?' for the Japanese help screen

### Flame graphs

The `aggregate --stack` option prints the traversal as folded stacks - the "collapsed" format read
by flame-graph tools like [`inferno`](https://github.com/jonhoo/inferno).
Each line is an entry's path with `;` between its components, a space, and its size
in bytes, so an interactive drill-down can be turned into a single shareable SVG:
`dua stacks` prints folded stacks—the "collapsed" interchange format read by flame-graph tools.
Each line is an entry's path with `;` between its components, a space, and its size in bytes:

```bash
dua aggregate --stack | inferno-flamegraph > disk-usage.svg
dua stacks > disk-usage.folded
```

`dua flamegraph` renders the same data with [`inferno`](https://github.com/jonhoo/inferno), writes
the SVG to a temporary file, and opens it. Pass an output path to write the SVG without opening it.
Both commands accept the usual traversal options as well as `--depth` and `--import`:

```bash
dua flamegraph
dua flamegraph -o disk-usage.svg
```

### Configuration
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