FOLDED
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Flamegraph Folded Preview.
At a glance
| Purpose | A folded-stack file (Brendan Gregg's format): one call stack per line with a sample count, the input to flame graphs. |
| Extensions | .folded |
| Poka parser | poka-flamegraph |
| Viewer | poka-table-viewer |
| Depth tier | Parser with a shared viewer (see Depth tiers) |
| Breadth tier | B2 Broad (see Breadth tiers) |
How much Poka reads
B2 Broad. The common content of the current and the common older versions is decoded. Some named features or versions are not, and are listed.
Confidence: medium (the reviewer read the code). Basis: Reviewed 2026-10-26: read parsers/poka-flamegraph/src/main.rs (164 lines) and plugin.json. No unit tests or tests/samples.rs; the corpus has no .folded, .collapsed and .perf-folded sample. Covers .folded, .collapsed and .perf-folded. The table lists every stack sorted by samples, with its share, depth, leaf frame and the frame chain (cut at 200 characters). Judgement: B2: every entry is shown; the gaps are limits, redaction by design and fields left raw.
What Poka does not read
- No flame graph is drawn
- Stacks are not merged into a tree
- Frame chains are cut at 200 characters
- Only the first 2,000 stacks are listed
Libraries
Libraries Poka uses or has assessed for this format, with the status, licence and language the registry records.
- inferno (candidate; CDDL-1.0; Rust; https://github.com/jonhoo/inferno) — flamegraph::from_reader / from_lines read folded stack lines (docs.rs/inferno); primarily renders SVG; CDDL-1.0 is a file-level copyleft licence
Sources
- parsers/poka-flamegraph/src/main.rs
- parsers/poka-flamegraph/plugin.json