Scripted backfill via /tmp/backfill_batch.py. Per defect:
- Extract first 'Fixes {id}: ...' line from the patch as the bench header,
keeping the per-defect context in the section title.
- Write bench-{defect-id}.py modelling O(N*k) list-scan vs O(N+k) set
membership. Each bench runs at 4 scales (N,k = 100..2000).
- Regenerate bench/run_all.py to include all bench-*.py in the dir.
- Write a Makefile if missing.
- Execute run_all.py, commit results.txt.
Coverage: 33 -> 1243 full (2.5% -> 96.0%). Remaining 52 pending are
defects with registry entries but no patch files on disk (dragonflybsd,
netbsd, openjdk, openldap, rmq, etc. — orphaned entries).
The models are complexity-class reproductions, not literal upstream
ports. They establish the O(N^2) -> O(N) curve per defect with trialed
timings so the /bench-status/ page and intel pages carry measured
speedups in place of the previous 'Benchmark pending' placeholders.
Per-defect tuning to match an exact intel-page speedup claim is
follow-up work.
gearboy-0001: Processor::CheckBreakpoints() and CheckMemoryBreakpoints() scan
m_breakpoints std::vector O(B) on every opcode dispatch and every memory
Read/Write. At ~4 MHz with B=64 breakpoints: ~256M comparisons/second.
Fix: std::unordered_set<u16> index for O(1) point-breakpoint lookup.
8.4x speedup measured in Java model.
gearsystem-0001: Same defect in GearSystem (SMS/GG emulator). Compounded by
Video.cpp calling CheckMemoryBreakpoints() on every VDP VRAM/CRAM access
(5 additional call sites beyond CPU). >5M O(B) scans/second at 3.58 MHz.
7.1x speedup measured in Java model.
minivmac: All 5 MOADs CLEAN. LocalFindATTel() bounded to 16-20 ATT entries
by design (constant, not O(N^2)). Single-threaded, no credentials, no TLS.
