diagnostics: LPG residency accounting + compact/lazy experiments - #4
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Attribute property map slots, string payloads, capacity waste, and adjacency; add shrink + dictionary-compress experiments with RSS and correctness checks for the Track E residual investigation.
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Aug 2, 2026
Charge max_schema_bytes for all schema-bounded structures: - node_schema (labels + label_to_table_id + table_row_counts) - rel_keys + rel_id_map (edge type schema) - schema_strings (global dictionary schema strings) - column geometries (per-column metadata) N-vs-4N test now shows schema_peak=476 B (non-zero, constant across scales as expected for schema-bounded data). anon_peak and temp_peak remain 0 — those require charging at the pass/run-store level (future work). GATES: - grafeo-core: 2130 passed - n_vs_4n_peak_memory: PASSED (delta ratio 0.75x)
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Summary
Expand Grafeo LPG memory accounting (property columns, strings, capacity waste, adjacency) and measure compact/lazy representations.
Separate from close-forensics PR #2.
Head:
195678c36b335022c9a2add4f755bb675955feb2Measured (synthetic 200k strings / 256 unique)
shrink_capacities: no waste/RSS change on this fillSee
docs/TRACK_E_LPG_RESIDENCY.md.Test plan
cargo test -p grafeo-core --test lpg_residency_experimentsMade with Cursor