3b4449d773
Phase v4-mid-1: C6-only v4 route + page_meta_of() Fail-Fast validation
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Implementation:
- SMALL_SEGMENT_V4_* constants (SIZE=2MiB, PAGE_SIZE=64KiB, MAGIC=0xDEADBEEF)
- smallsegment_v4_page_meta_of(): O(1) mask+shift lookup with magic validation
- Computes segment base: addr & ~(2MiB - 1)
- Verifies SmallSegment magic number
- Calculates page_idx: (addr - seg_base) >> PAGE_SHIFT (16)
- Returns non-NULL sentinel for now (full page_meta[] in Phase v4-mid-2)
Stubs for C6-only phase:
- small_heap_alloc_fast_v4(): C6 returns NULL → pool v1 fallback
- small_heap_free_fast_v4(): C6 calls page_meta_of() for Fail-Fast, then pool v1 fallback
Documentation:
- ENV_PROFILE_PRESETS.md: Add "C6_ONLY_SMALLOBJECT_V4" research profile
- HAKMEM_SMALL_HEAP_V4_ENABLED=1, HAKMEM_SMALL_HEAP_V4_CLASSES=0x40
- Expected: Throughput ≈ 28–29M ops/s (same as v1)
Build:
- ビルド成功（警告のみ）
- Backward compatible, alloc/free stubs fall back to pool v1
Sanity:
- C6-heavy with v4 opt-in: segv/assert なし
- page_meta_of() lookup working correctly
- Performance unchanged (expected for stub phase)
Status:
- C6-only v4 route now available via ENV opt-in
- Phase v4-mid-2: SmallHeapCtx v4 full implementation with A/B
🤖 Generated with Claude Code
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com >
2025-12-10 23:37:45 +09:00
2a13478dc7
Optimize C6 heavy and C7 ultra performance analysis with refined design refinements
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- Update environment profile presets and visibility analysis
- Enhance small object and tiny segment v4 box implementations
- Refine C7 ultra and C6 heavy allocation strategies
- Add comprehensive performance metrics and design documentation
🤖 Generated with Claude Code
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com >
2025-12-10 22:57:26 +09:00
d576116484
Document current Mixed baseline throughput and ENV profile
2025-12-10 14:12:13 +09:00
406a2f4d26
Incremental improvements: mid_desc cache, pool hotpath optimization, and doc updates
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**Changes:**
- core/box/pool_api.inc.h: Code organization and micro-optimizations
- CURRENT_TASK.md: Updated Phase MD1 (mid_desc TLS cache: +3.2% for C6-heavy)
- docs/analysis files: Various analysis and documentation updates
- AGENTS.md: Agent role clarifications
- TINY_FRONT_V3_FLATTENING_GUIDE.md: Flattening strategy documentation
**Verification:**
- random_mixed_hakmem: 44.8M ops/s (1M iterations, 400 working set)
- No segfaults or assertions across all benchmark variants
- Stable performance across multiple runs
🤖 Generated with [Claude Code](https://claude.com/claude-code )
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com >
2025-12-10 14:00:57 +09:00
acc64f2438
Phase ML1: Pool v1 memset 89.73% overhead 軽量化 (+15.34% improvement)
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## Summary
- ChatGPT により bench_profile.h の setenv segfault を修正（RTLD_NEXT 経由に切り替え）
- core/box/pool_zero_mode_box.h 新設：ENV キャッシュ経由で ZERO_MODE を統一管理
- core/hakmem_pool.c で zero mode に応じた memset 制御（FULL/header/off）
- A/B テスト結果：ZERO_MODE=header で +15.34% improvement（1M iterations, C6-heavy）
## Files Modified
- core/box/pool_api.inc.h: pool_zero_mode_box.h include
- core/bench_profile.h: glibc setenv → malloc+putenv（segfault 回避）
- core/hakmem_pool.c: zero mode 参照・制御ロジック
- core/box/pool_zero_mode_box.h (新設): enum/getter
- CURRENT_TASK.md: Phase ML1 結果記載
## Test Results
| Iterations | ZERO_MODE=full | ZERO_MODE=header | Improvement |
|-----------|----------------|-----------------|------------|
| 10K | 3.06 M ops/s | 3.17 M ops/s | +3.65% |
| 1M | 23.71 M ops/s | 27.34 M ops/s | **+15.34%** |
🤖 Generated with [Claude Code](https://claude.com/claude-code )
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com >
2025-12-10 09:08:18 +09:00
