e9b97e9d8e
Phase 74-1/74-2: UnifiedCache LOCALIZE optimization (P1 frozen, NEUTRAL -0.87%)
...
Phase 74-1 (ENV-gated LOCALIZE):
- Result: +0.50% (NEUTRAL)
- Runtime branch overhead caused instructions/branches to increase
- Diagnosed: Branch tax dominates intended optimization
Phase 74-2 (compile-time LOCALIZE):
- Result: -0.87% (NEUTRAL, P1 frozen)
- Removed runtime branch → instructions -0.6%, branches -2.3% ✓
- But cache-misses +86% (register pressure/spill) → net loss
- Conclusion: LOCALIZE本体 works, but fragile to cache effects
Key finding:
- Dependency chain reduction (LOCALIZE) has low ROI due to cache-miss sensitivity
- P1 (LOCALIZE) frozen at default OFF
- Next: Phase 74-3 (P0: FASTAPI) - move branches outside hot loop
Files:
- core/hakmem_build_flags.h: HAKMEM_TINY_UC_LOCALIZE_COMPILED flag
- core/box/tiny_unified_cache_hitpath_env_box.h: ENV gate (frozen)
- core/front/tiny_unified_cache.h: compile-time #if blocks
- docs/analysis/PHASE74_*: Design, instructions, results
- CURRENT_TASK.md: P1 frozen, P0 next instructions
Also includes:
- Phase 69 refill tuning results (archived docs)
- PERFORMANCE_TARGETS_SCORECARD.md: Phase 69 baseline update
- PHASE70_REFILL_OBSERVABILITY_PREREQS_SSOT.md: Route banner docs
🤖 Generated with [Claude Code](https://claude.com/claude-code )
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com >
2025-12-18 07:47:44 +09:00
e4baa1894f
CURRENT_TASK: Phase 72-2 complete (WarmPool sweep, all NO-GO, ENV knob ROI exhausted)
...
Phase 72-2 Results:
- WarmPool=16 (baseline): 56.23M ops/s
- WarmPool=20: 56.13M ops/s (-0.18%, NO-GO)
- WarmPool=24: 56.30M ops/s (+0.12%, noise)
- WarmPool=32: 56.07M ops/s (-0.28%, NO-GO)
Conclusion:
- ENV knob optimization exhausted
- WarmPool=16 remains optimal
- Next: Structural changes (Phase 74)
🤖 Generated with [Claude Code](https://claude.com/claude-code )
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com >
2025-12-18 06:11:21 +09:00
