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Author SHA1 Message Date
b5b9cce0a1 bench backfill: +1210 Python complexity-class models across 583 projects
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.
2026-04-23 12:31:18 -04:00
de09497fb3 undf: assign UNDF-2026-000001224..000001229 (systemd-0004, dbus-0001, mysql-0005, proxysql-0002 +2); stamp patches 2026-04-03 15:58:23 -04:00
09012e7ec1 openfoam+root-cern: 5-MOAD scan; openfoam-0003 CWE-407 DSMCCloud typeIdList O(C*T*M*K), root-cern-0003 CWE-407 TTree::InitializeBranchLists fSeqBranches O(B^2)
openfoam-0003: DSMCCloud::initialise calls findIndex(typeIdList_, moleculeName)
inside triple-nested forAll(cells) * forAll(tets) * forAll(molecules) loop.
Fix: pre-build HashTable<label, word> before cell loop for O(1) lookups.
3-10x speedup depending on type count. 5/5 PASS.

root-cern-0003: TTree::InitializeBranchLists calls std::find on fSeqBranches
(std::vector<TBranch*>) inside two O(B) loops, yielding O(B^2) total.
Fix: mirror fSeqBranches in std::unordered_set<TBranch*> for O(1) lookup.
~500x speedup at B=500, ~1000x at B=1000 (CMS NanoAOD scale). 6/6 PASS.

MOAD-0002: OpenFOAM objectRegistry god-object structural, ROOT gROOT intertangle
structural (gROOTMutex inconsistently applied). Both documented.
MOAD-0003: ROOT TTHREAD_TLS method-scoped only, CLEAN. OpenFOAM no thread-local, CLEAN.
MOAD-0004: OpenFOAM CLEAN. ROOT TWebFile auth logging pre-existing root-cern-0002.
MOAD-0005: Both CLEAN.
2026-04-03 15:31:30 -04:00