russell@unturf.com
b5b9cce0a1
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.
24 lines
1.4 KiB
Text
24 lines
1.4 KiB
Text
=== v8-0001: CWE-407: list-scan inside loop in v8-0001 (generic model) ===
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N=100 k=100 : defective=0.090ms fixed=0.004ms speedup=25.6x
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N=500 k=500 : defective=2.267ms fixed=0.021ms speedup=105.7x
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N=1000 k=1000 : defective=8.783ms fixed=0.046ms speedup=192.4x
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N=2000 k=2000 : defective=35.590ms fixed=0.098ms speedup=364.4x
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=== v8-0002: v8-0002 — objects/intl: CanonicalizeLocaleList seen-list O(N²) → O(N) ===
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N=100 k=100 : defective=0.084ms fixed=0.003ms speedup=24.4x
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N=500 k=500 : defective=2.145ms fixed=0.088ms speedup=24.4x
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N=1000 k=1000 : defective=8.706ms fixed=0.046ms speedup=190.4x
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N=2000 k=2000 : defective=35.124ms fixed=0.097ms speedup=360.9x
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=== v8-0003: v8-0003 — compiler/revectorizer: SLPTree::TryReduceLoadChain loads O(L×N) → O(L) ===
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N=100 k=100 : defective=0.084ms fixed=0.003ms speedup=24.5x
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N=500 k=500 : defective=2.278ms fixed=0.020ms speedup=111.4x
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N=1000 k=1000 : defective=8.727ms fixed=0.046ms speedup=188.6x
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N=2000 k=2000 : defective=37.904ms fixed=0.096ms speedup=393.8x
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=== v8-0004: KnownMapsMerger::IntersectWithKnownNodeAspects std::find O(P×R) → O(P+R) merge ===
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N=100 k=100 : defective=0.084ms fixed=0.003ms speedup=24.5x
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N=500 k=500 : defective=2.117ms fixed=0.036ms speedup=58.9x
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N=1000 k=1000 : defective=8.716ms fixed=0.046ms speedup=189.5x
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N=2000 k=2000 : defective=35.753ms fixed=0.097ms speedup=367.7x
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