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7 Commits

Author SHA1 Message Date
Moe Charm (CI)
39a3c53dbc Phase v7-2: SmallObject v7 C6-only implementation with RegionIdBox integration 
- SmallSegment_v7: 2MiB segment with TLS slot and free page stack
- ColdIface_v7: Page refill/retire between HotBox and SegmentBox
- HotBox_v7: Full C6-only alloc/free with header writing (HEADER_MAGIC|class_idx)
- Free path early-exit: Check v7 route BEFORE ss_fast_lookup (separate mmap segment)
- RegionIdBox: Register v7 segment for ptr->region lookup
- Benchmark: v7 ON ~54.5M ops/s (-7% overhead vs 58.6M legacy baseline)

v7 correctly balances alloc/free counts and page lifecycle.
RegionIdBox overhead identified as primary cost driver.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-12 03:12:28 +09:00
Moe Charm (CI)
118c0e4857 Phase FREE-DISPATCHER-OPT-1: free dispatcher 統計計測 
**目的**: free dispatcher（29%）の内訳を細分化して計測。

**実装内容**:
- FreeDispatchStats 構造体追加（ENV: HAKMEM_FREE_DISPATCH_STATS, default 0）
- カウンタ: total_calls / domain (tiny/mid/large) / route (ultra/legacy/pool/v6) / env_checks / route_for_class_calls
- hak_free_at / tiny_route_for_class / tiny_route_snapshot_init にカウンタ埋め込み
- 挙動変更なし（計測のみ、ENV OFF 時は overhead ゼロ）

**計測結果**:

Mixed 16-1024B (1M iter, ws=400):
- total=8,081, route_calls=267,967, env_checks=9
- BENCH_FAST_FRONT により大半は早期リターン
- route_for_class は主に alloc 側で呼ばれる（267k calls vs 8k frees）
- ENV check は初期化時の 9回のみ（snapshot 効果）

C6-heavy (257-768B, 1M iter, ws=400):
- total=500,099, route_calls=1,034, env_checks=9
- fg_classify_domain に到達する free が多い
- route_for_class 呼び出しは極小（snapshot 効果）

**結論**:
- ENV check は既に十分最適化されている（初期化時のみ）
- route_for_class は alloc 側での呼び出しが主で、free 側は snapshot で O(1)
- 次フェーズ（OPT-2）では別のアプローチを検討

**ドキュメント追加**:
- docs/analysis/FREE_DISPATCHER_ANALYSIS.md（新規）
- CURRENT_TASK.md に Phase FREE-DISPATCHER-OPT-1 セクション追加

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
 2025-12-11 21:21:40 +09:00
Moe Charm (CI)
c60199182e Phase v6-1/2/3/4: SmallObject Core v6 - C6-only implementation + refactor 
Phase v6-1: C6-only route stub (v1/pool fallback)
Phase v6-2: Segment v6 + ColdIface v6 + Core v6 HotPath implementation
  - 2MiB segment / 64KiB page allocation
  - O(1) ptr→page_meta lookup with segment masking
  - C6-heavy A/B: SEGV-free but -44% performance (15.3M ops/s)

Phase v6-3: Thin-layer optimization (TLS ownership check + batch header + refill batching)
  - TLS ownership fast-path skip page_meta for 90%+ of frees
  - Batch header writes during refill (32 allocs = 1 header write)
  - TLS batch refill (1/32 refill frequency)
  - C6-heavy A/B: v6-2 15.3M → v6-3 27.1M ops/s (±0% vs baseline) ✅

Phase v6-4: Mixed hang fix (segment metadata lookup correction)
  - Root cause: metadata lookup was reading mmap region instead of TLS slot
  - Fix: use TLS slot descriptor with in_use validation
  - Mixed health: 5M iterations SEGV-free, 35.8M ops/s ✅

Phase v6-refactor: Code quality improvements (macro unification + inline + docs)
  - Add SMALL_V6_* prefix macros (header, pointer conversion, page index)
  - Extract inline validation functions (small_page_v6_valid, small_ptr_in_segment_v6)
  - Doxygen-style comments for all public functions
  - Result: 0 compiler warnings, maintained +1.2% performance

Files:
- core/box/smallobject_core_v6_box.h (new, type & API definitions)
- core/box/smallobject_cold_iface_v6.h (new, cold iface API)
- core/box/smallsegment_v6_box.h (new, segment type definitions)
- core/smallobject_core_v6.c (new, C6 alloc/free implementation)
- core/smallobject_cold_iface_v6.c (new, refill/retire logic)
- core/smallsegment_v6.c (new, segment allocator)
- docs/analysis/SMALLOBJECT_CORE_V6_DESIGN.md (new, design document)
- core/box/tiny_route_env_box.h (modified, v6 route added)
- core/front/malloc_tiny_fast.h (modified, v6 case in route switch)
- Makefile (modified, v6 objects added)
- CURRENT_TASK.md (modified, v6 status added)

Status:
- C6-heavy: v6 OFF 27.1M → v6-3 ON 27.1M ops/s (±0%) ✅
- Mixed: v6 ON 35.8M ops/s (C6-only, other classes via v1) ✅
- Build: 0 warnings, fully documented ✅

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-11 15:29:59 +09:00
Moe Charm (CI)
9c24bebf08 Phase v5-1: SmallObject v5 C6-only route stub 接続 
- tiny_route_env_box.h: TINY_ROUTE_SMALL_HEAP_V5 enum 追加、route snapshot で C6→v5 分岐
- malloc_tiny_fast.h: alloc/free switch に v5 case 追加（v1/pool fallback）
- smallobject_hotbox_v5.c: stub 実装（alloc は NULL 返却、free は no-op）
- smallobject_hotbox_v5_box.h: 関数 signature に ctx パラメータ追加
- Makefile: core/smallobject_hotbox_v5.o をリンクリストに追加
- ENV_PROFILE_PRESETS.md: v5-1 プリセット追記
- CURRENT_TASK.md: Phase v5-1 完了記録

**特性**:
- ENV: HAKMEM_SMALL_HEAP_V5_ENABLED=1 / HAKMEM_SMALL_HEAP_V5_CLASSES=0x40 で opt-in
- テスト結果: C6-heavy (v5 OFF 15.5M → v5 ON 16.4M ops/s, 正常), Mixed 47.2M ops/s, SEGV/assert なし
- 挙動は v1/pool fallback と同じ（実装は v5-2）

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-11 03:25:37 +09:00
Moe Charm (CI)
cbd33511eb Phase v4-3.1: reuse C7 v4 pages and record prep calls 2025-12-10 17:58:42 +09:00
Moe Charm (CI)
a905e0ffdd Guard madvise ENOMEM and stabilize pool/tiny front v3 2025-12-09 21:50:15 +09:00
Moe Charm (CI)
8f18963ad5 Phase 36-37: TinyHotHeap v2 HotBox redesign and C7 current_page policy fixes 
- Redefine TinyHotHeap v2 as per-thread Hot Box with clear boundaries
- Add comprehensive OS statistics tracking for SS allocations
- Implement route-based free handling for TinyHeap v2
- Add C6/C7 debugging and statistics improvements
- Update documentation with implementation guidelines and analysis
- Add new box headers for stats, routing, and front-end management
 2025-12-08 21:30:21 +09:00