LanguagesCEvidence
cp-gettime-hot — measured, still hint
Status
hint. Wall-clock JSONL: cp-gettime-hot.jsonl. Not corpus-triaged. The 2026-10-22 corpus verdict does not cover this slug.
Measurement
100000 iterations. Both sides store a value each iteration so the loop cannot collapse. Before calls gettimeofday; after uses one sample taken outside the loop.
| role | case | median_ms | ops | ratio |
|---|---|---|---|---|
| after | clock_once | 0.036000 | 100000 | 1 |
| before | gettimeofday_in_loop | 1.194000 | 100000 | 33.167 |
The microbench shows a cost for this one shape. Default stays hint until the shape is corpus-triaged. This ratio is not a general speedup.
Unblock
Do not set the default to error from this file alone. A changing input, a cold path, or another ABI can erase the difference. Corpus triage is still required before any default change.