LanguagesLua
luaperf evidence policy
Gate
A rule may be treated as error only if both exist under packages/luaperf/evidence/:
<RULE>.md— claim, how measured, toolchain version, limits<RULE>.jsonl— ≥1 before/after line withrule,case,median_ms,ops,ratio,ts
Otherwise the rule stays hint.
Current map
As of 2026-10-22.
| Rule | Severity | Evidence | Smell |
|---|---|---|---|
| lu-table-insert-hot | off | measured (lu-table-insert-hot.md + lu-table-insert-hot.jsonl); kept off | table.insert without size / growing table in loop |
| lu-string-concat-hot | error | yes (lu-string-concat-hot.md + lu-string-concat-hot.jsonl) | string .. concatenation in loop |
| lu-print-hot | hint | yes (lu-print-hot.md + lu-print-hot.jsonl) | print in loop |
lu-string-concat-hot escalated after G4 microbench on Lua 5.4.7 (fixture-shaped digits ~6.6×; fixed 32-byte chunks ~117×; small N ~1×). lu-table-insert-hot stays off (G3 OK-idiom). lu-print-hot has G4 evidence (print/quiet ~85× to /dev/null on Lua 5.4.7) but stays hint — I/O sink–dependent, JP002/CP003-style (debug/CLI printers common; buffer-only ~2×).