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Author SHA1 Message Date
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)
2f5d53fd6d Phase v5-5: TLS cache for C6 v5 
Add 1-slot TLS cache to C6 v5 to reduce page_meta access overhead.

Implementation:
- Add HAKMEM_SMALL_HEAP_V5_TLS_CACHE_ENABLED ENV (default: 0)
- SmallHeapCtxV5: add c6_cached_block field for TLS cache
- alloc: cache hit bypasses page_meta lookup, returns immediately
- free: empty cache stores block, full cache evicts old block first

Results (1M iter, ws=400, HEADER_MODE=full):
- C6-heavy (257-768B): 35.53M → 37.02M ops/s (+4.2%)
- Mixed 16-1024B: 38.04M → 37.93M ops/s (-0.3%, noise)

Known issue: header_mode=light has infinite loop bug
(freelist pointer/header collision). Full mode only for now.

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

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-11 07:40:22 +09:00
Moe Charm (CI)
e0fb7d550a Phase v5-2: SmallObject v5 C6-only 本実装 (WIP - header fix) 
本実装修正:
- tiny_region_id_write_header() を追加: USER pointer を正しく返す
- TLS slot からの segment 探索 (page_meta_of)
- Page-level allocation で segment 再利用
- 2MiB alignment 保証 (4MiB 確保 + alignment)
- free パスの route 修正 (v4 から v5 への fallthrough 削除)

動作確認:
- SEGV 消失: alloc/free 基本動作 OK
- 性能: ~18-20M ops/s (baseline 43-47M の約 40-45%)
- 回帰原因: TLS slot 線形探索 O(n)、find_page O(n)

残タスク:
- O(1) segment lookup 最適化 (hash または array 直接参照)
- find_page 除去 (segment lookup 成功時)
- partial_count/list 管理の最適化

ENV デフォルト OFF なので本線影響なし。

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2025-12-11 04:14:51 +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)
dedfea27d5 Phase v5-0 refactor: ENV統一・マクロ化・構造体最適化 
- ENV initialization を sentinel パターンで統一
  - ENV_UNINIT/ENABLED/DISABLED 定数追加
  - __builtin_expect で初期化チェックを最適化
  - small_heap_v5_enabled/class_mask を統一パターンに変更

- ポインタマクロ化（O(1) segment/page 計算）
  - SMALL_SEGMENT_V5_BASE_FROM_PTR: ptr から segment base を mask で計算
  - SMALL_SEGMENT_V5_PAGE_IDX: segment 内の page_idx を shift で計算
  - SMALL_SEGMENT_V5_PAGE_META: page_meta への O(1) access（bounds check付き）
  - SMALL_SEGMENT_V5_VALIDATE_MAGIC: magic 検証
  - SMALL_SEGMENT_V5_VALIDATE_PTR: Fail-Fast validation pipeline

- SmallClassHeapV5 に partial_count 追加
  - partial ページリストのカウンタを追加（refill/retire 最適化用）

- SmallPageMetaV5 の field 再配置（L1 cache 最適化）
  - hot fields (free_list, used, capacity) を先頭に集約
  - metadata (class_idx, flags, page_idx, segment) を後方配置
  - total 24B、offset コメント追加

- route priority ENV 追加
  - HAKMEM_ROUTE_PRIORITY={v4|v5|auto}（default: v4）
  - enum small_route_priority 定義
  - small_route_priority() 関数追加

- segment_size override ENV 追加
  - HAKMEM_SMALL_HEAP_V5_SEGMENT_SIZE（default: 2MiB）
  - power of 2 & >= 64KiB validation

挙動: 完全不変（v5 route は呼ばれない、ENV default OFF）
テスト: Mixed 16–1024B で 43.0–43.8M ops/s（変化なし）、SEGV/assert なし

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

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-11 03:19:18 +09:00
Moe Charm (CI)
83d4096fbc Phase v5-0: SmallObject v5 の設計・型/IF/ENV スケルトン追加 
設計ドキュメント:
- docs/analysis/SMALLOBJECT_V5_DESIGN.md: v5 アーキテクチャ全体設計

新規ファイル (v5 スケルトン):
- core/box/smallobject_hotbox_v5_box.h: HotBox v5 型定義
- core/box/smallsegment_v5_box.h: Segment v5 型定義
- core/box/smallobject_cold_iface_v5.h: ColdIface v5 IF宣言
- core/box/smallobject_v5_env_box.h: ENV ゲート
- core/smallobject_hotbox_v5.c: 実装 stub (完全 fallback)

特徴:
✅ 型とインターフェースのみ定義（v5-0 は機能なし）
✅ ENV デフォルト OFF（HAKMEM_SMALL_HEAP_V5_ENABLED=0）
✅ 挙動完全不変（Mixed/C6 benchmark 確認済み）
✅ v4 との区別を明確化 (*_v5 suffix)
✅ v5-1 (stub) → v5-2 (本実装) → v5-3 (Mixed) への段階実装準備完了

フェーズ:
- v5-0: 型定義のみ（現在）
- v5-1: C6-only stub route 追加
- v5-2: Segment/HotBox 本実装 (C6-only bench A/B)
- v5-3: Mixed での段階昇格 (C6 → C5 → ...)

目標性能: Mixed 16–1024B で 50–60M ops/s (mimalloc の 5割)

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-11 03:09:57 +09:00
Moe Charm (CI)
bdfa32d869 Phase v4-mid-SEGV: C6 v4 を SmallSegment 専用に切り替え、TinyHeap SEGV を解決 
問題: C6 v4 が TinyHeap のページを共有することで iters >= 800k で freelist 破壊 → SEGV 発生

修正内容:
- c6_segment_alloc_page_direct(): C6 専用ページ割当 (SmallSegment v4 経由, TinyHeap 非共有)
- c6_segment_release_page_direct(): C6 専用ページ返却
- cold_refill_page_v4() で C6 を分岐: SmallSegment 直接使用
- cold_retire_page_v4() で C6 を分岐: SmallSegment に直接返却
- fastlist state reset 処理追加 (L392-399)

結果:
✅ iters=1M, ws <= 390 で SEGV 消失
✅ C6-only: v4 OFF ~47M → v4 ON ~43M ops/s (−8.5%, 安定)
✅ Mixed: v4 ON で SEGV なし (小幅回帰許容)

方針: C6 v4 は研究箱として安定化完了。本線には載せない (既存 mid/pool v1 使用)。

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-11 02:39:32 +09:00
Moe Charm (CI)
e486dd2c55 Phase v4-mid-6: Implement C6 v4 TLS Fastlist (Gated) 
- Implemented TLS fastlist logic for C6 in smallobject_hotbox_v4.c (alloc/free).
- Added SmallC6FastState struct and g_small_c6_fast TLS variable.
- Gated the fastlist logic with HAKMEM_SMALL_HEAP_V4_FASTLIST (default OFF) due to observed instability in mixed workloads.
- Fixed a memory leak in small_heap_free_fast_v4 fallback path by calling hak_pool_free.
- Updated CURRENT_TASK.md with phase report.
 2025-12-11 01:44:08 +09:00
Moe Charm (CI)
dd974b49c5 Phase v4-mid-2, v4-mid-3, v4-mid-5: SmallObject HotBox v4 implementation and docs update 
Implementation:
- SmallObject HotBox v4 (core/smallobject_hotbox_v4.c) now fully implements C6-only allocations and frees, including current/partial management and freelist operations.
- Cold Iface (tiny_heap based) for page refill/retire is integrated.
- Stats instrumentation (v4-mid-5) added to small_heap_alloc_fast_v4 and small_heap_free_fast_v4, with a new header file core/box/smallobject_hotbox_v4_stats_box.h and atexit dump function.

Updates:
- CURRENT_TASK.md has been condensed and updated with summaries of Phase v4-mid-2 (C6-only v4), Phase v4-mid-3 (C5-only v4 pilot), and the stats implementation (v4-mid-5).
- docs/analysis/SMALLOBJECT_V4_BOX_DESIGN.md updated with A/B results and conclusions for C6-only and C5-only v4 implementations.
- The previous CURRENT_TASK.md content has been archived to CURRENT_TASK_ARCHIVE_20251210.md.
 2025-12-11 01:01:15 +09:00
Moe Charm (CI)
3b4449d773 Phase v4-mid-1: C6-only v4 route + page_meta_of() Fail-Fast validation 
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
Moe Charm (CI)
52c65da783 Phase v4-mid-0: Small-object v4 型・IF 足場（箱化モジュール化） 
- SmallHeapCtx/SmallPageMeta/SmallClassHeap typedef alias 追加
- SmallSegment struct (base/num_pages/owner_tid/magic) を smallsegment_v4_box.h に定義
- SmallColdIface_v4 direct function prototypes (refill/retire/remote_push/drain)
- smallobject_hotbox_v4.c の internal/public API 分離（small_segment_v4_internal）
- direct function stubs 実装（SmallColdIfaceV4 delegate 形式）
- ENV OFF デフォルト（ENABLED=0/CLASSES=0）で既存挙動 100% 不変
- ビルド成功・sanity 確認（mixed/C6-heavy、segv/assert なし）
- CURRENT_TASK.md に Phase v4-mid-0 記録

🤖 Generated with Claude Code

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-10 23:23:07 +09:00
Moe Charm (CI)
2a13478dc7 Optimize C6 heavy and C7 ultra performance analysis with refined design refinements 
- 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
Moe Charm (CI)
9460785bd6 Enable C7 ULTRA segment path by default 2025-12-10 22:25:24 +09:00
Moe Charm (CI)
bbb55b018a Add C7 ULTRA segment skeleton and TLS freelist 2025-12-10 22:19:32 +09:00
Moe Charm (CI)
f2ce7256cd Add v4 C7/C6 fast classify and small-segment v4 scaffolding 2025-12-10 19:14:38 +09:00
Moe Charm (CI)
3261025995 Phase v4-4: pilot C6 v4 route with opt-in gate 2025-12-10 18:18:05 +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)
677030d699 Document new Mixed baseline and C7 header dedup A/B 2025-12-10 14:38:49 +09:00
Moe Charm (CI)
d576116484 Document current Mixed baseline throughput and ENV profile 2025-12-10 14:12:13 +09:00
Moe Charm (CI)
406a2f4d26 Incremental improvements: mid_desc cache, pool hotpath optimization, and doc updates 
**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
Moe Charm (CI)
0e5a2634bc Phase 82 Final: Documentation of mid_desc race fix and comprehensive A/B results 
**Implementation Summary:**
- Early `mid_desc_init_once()` in `hak_pool_init_impl()` prevents uninitialized mutex crash
- Eliminates race condition that caused C7_SAFE + flatten crashes
- Enables safe operation across all profiles (C7_SAFE, LEGACY)

**Benchmark Results (C6_HEAVY_LEGACY_POOLV1, Release):**
- Phase 1 (Baseline): 3.03M / 14.86M / 26.67M ops/s (10K/100K/1M)
- Phase 2 (Zero Mode): +5.0% / -2.7% / -0.2%
- Phase 3 (Flatten): +3.7% / +6.1% / -5.0%
- Phase 4 (Combined): -5.1% / +8.8% / +2.0% (best at 100K: +8.8%)
- Phase 5 (C7_SAFE Safety): NO CRASH ✅ (all iterations stable)

**Mainline Policy:**
- mid_desc initialization: Always enabled (crash prevention)
- Flatten: Default OFF (bench opt-in via HAKMEM_POOL_V1_FLATTEN_ENABLED=1)
- Zero Mode: Default FULL (bench opt-in via HAKMEM_POOL_ZERO_MODE=header)
- Workload-specific: Medium (100K) benefits most (+8.8%)

**Documentation Updated:**
- CURRENT_TASK.md: Added Phase 82 conclusions with benchmark table
- MID_LARGE_CPU_HOTPATH_ANALYSIS.md: Added Phase 82 Final with workload analysis

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

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
 2025-12-10 09:35:18 +09:00
Moe Charm (CI)
acc64f2438 Phase ML1: Pool v1 memset 89.73% overhead 軽量化 (+15.34% improvement) 
## 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
Moe Charm (CI)
a905e0ffdd Guard madvise ENOMEM and stabilize pool/tiny front v3 2025-12-09 21:50:15 +09:00
Moe Charm (CI)
e274d5f6a9 pool v1 flatten: break down free fallback causes and normalize mid_desc keys 2025-12-09 19:34:54 +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
Moe Charm (CI)
34a8fd69b6 C7 v2: add lease helpers and v2 page reset 2025-12-08 14:40:03 +09:00
Moe Charm (CI)
9502501842 Fix tiny lane success handling for TinyHeap routes 2025-12-07 23:06:50 +09:00
Moe Charm (CI)
a6991ec9e4 Add TinyHeap class mask and extend routing 2025-12-07 22:49:28 +09:00
Moe Charm (CI)
9c68073557 C7 meta-light delta flush threshold and clamp 2025-12-07 22:42:02 +09:00
Moe Charm (CI)
fda6cd2e67 Boxify superslab registry, add bench profile, and document C7 hotpath experiments 2025-12-07 03:12:27 +09:00
Moe Charm (CI)
03538055ae Restore C7 Warm/TLS carve for release and add policy scaffolding 2025-12-06 01:34:04 +09:00
Moe Charm (CI)
d17ec46628 Fix C7 warm/TLS Release path and unify debug instrumentation 2025-12-05 23:41:01 +09:00
Moe Charm (CI)
093f362231 Add Page Box layer for C7 class optimization 
- Implement tiny_page_box.c/h: per-thread page cache between UC and Shared Pool
- Integrate Page Box into Unified Cache refill path
- Remove legacy SuperSlab implementation (merged into smallmid)
- Add HAKMEM_TINY_PAGE_BOX_CLASSES env var for selective class enabling
- Update bench_random_mixed.c with Page Box statistics

Current status: Implementation safe, no regressions.
Page Box ON/OFF shows minimal difference - pool strategy needs tuning.

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-12-05 15:31:44 +09:00
Moe Charm (CI)
7e3c3d6020 Update CURRENT_TASK after Mid MT removal 2025-12-02 00:53:26 +09:00
Moe Charm (CI)
4ef0171bc0 feat: Add ACE allocation failure tracing and debug hooks 
This commit introduces a comprehensive tracing mechanism for allocation failures within the Adaptive Cache Engine (ACE) component. This feature allows for precise identification of the root cause for Out-Of-Memory (OOM) issues related to ACE allocations.

Key changes include:
- **ACE Tracing Implementation**:
  - Added  environment variable to enable/disable detailed logging of allocation failures.
  - Instrumented , , and  to distinguish between "Threshold" (size class mismatch), "Exhaustion" (pool depletion), and "MapFail" (OS memory allocation failure).
- **Build System Fixes**:
  - Corrected  to ensure  is properly linked into , resolving an  error.
- **LD_PRELOAD Wrapper Adjustments**:
  - Investigated and understood the  wrapper's behavior under , particularly its interaction with  and  checks.
  - Enabled debugging flags for  environment to prevent unintended fallbacks to 's  for non-tiny allocations, allowing comprehensive testing of the  allocator.
- **Debugging & Verification**:
  - Introduced temporary verbose logging to pinpoint execution flow issues within  interception and  routing. These temporary logs have been removed.
  - Created  to facilitate testing of the tracing features.

This feature will significantly aid in diagnosing and resolving allocation-related OOM issues in  by providing clear insights into the failure pathways.
 2025-12-01 16:37:59 +09:00
Moe Charm (CI)
f32d996edb Update CURRENT_TASK.md: Phase 9-2 Complete (50M ops/s), Phase 10 Planned (Type Safety) 2025-12-01 13:50:46 +09:00
Moe Charm (CI)
3a040a545a Refactor: Split monolithic hakmem_shared_pool.c into acquire/release modules 
- Split core/hakmem_shared_pool.c into acquire/release modules for maintainability.
- Introduced core/hakmem_shared_pool_internal.h for shared internal API.
- Fixed incorrect function name usage (superslab_alloc -> superslab_allocate).
- Increased SUPER_REG_SIZE to 1M to support large working sets (Phase 9-2 fix).
- Updated Makefile.
- Verified with benchmarks.
 2025-11-30 18:11:08 +09:00
Moe Charm (CI)
f7d2348751 Update current task for Phase 9-2 SuperSlab unification 2025-11-30 11:02:39 +09:00
Moe Charm (CI)
4ad3223f5b docs: Update CURRENT_TASK.md and claude.md for Phase 8 completion 
Phase 8 Complete: BenchFast crash root cause fixes

Documentation updates:
1. CURRENT_TASK.md:
   - Phase 8 complete (TLS→Atomic + Header write fixes)
   - 箱理論 root cause analysis (3 critical bugs)
   - Next phase recommendations (Option C: BenchFast pool expansion)
   - Detailed technical explanations for each layer

2. .claude/claude.md:
   - Phase 8 achievement summary
   - 箱理論 4-principle validation
   - Commit references (191e65983, da8f4d2c8)

Key Fixes Documented:
- TLS→Atomic: Cross-thread guard variable (pthread_once bug)
- Header Write: Direct write bypasses P3 optimization (free routing)
- Infrastructure Isolation: __libc_calloc for cache arrays
- Design Fix: Removed unified_cache_init() call

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-30 05:50:43 +09:00
Moe Charm (CI)
d2d4737d1c Update CURRENT_TASK.md: Phase 7-Step4 complete (+55.5% total improvement!) 
**Updated**:
- Status: Phase 7 Step 1-3 → Step 1-4 (complete)
- Achievement: +54.2% → +55.5% total (+1.1% from Step 4)
- Performance: 52.3M → 81.5M ops/s (+29.2M ops/s total)

**Phase 7-Step4 Summary**:
- Replace 3 runtime checks with config macros in hot path
- Dead code elimination in PGO mode (bench builds)
- Performance: 80.6M → 81.5M ops/s (+1.1%, +0.9M ops/s)

**Macro Replacements**:
1. `g_fastcache_enable` → `TINY_FRONT_FASTCACHE_ENABLED` (line 421)
2. `tiny_heap_v2_enabled()` → `TINY_FRONT_HEAP_V2_ENABLED` (line 809)
3. `ultra_slim_mode_enabled()` → `TINY_FRONT_ULTRA_SLIM_ENABLED` (line 757)

**Dead Code Eliminated** (PGO mode):
- FastCache path: fastcache_pop() + hit/miss tracking
- Heap V2 path: tiny_heap_v2_alloc_by_class() + metrics
- Ultra SLIM path: ultra_slim_alloc_with_refill() early return

**Cumulative Phase 7 Results**:
- Step 1: Branch hint reversal (+54.2%)
- Step 2: PGO mode infrastructure (neutral)
- Step 3: Config box integration (neutral)
- Step 4: Macro replacement (+1.1%)
- **Total: +55.5% improvement (52.3M → 81.5M ops/s)**

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 17:05:54 +09:00
Moe Charm (CI)
09942d5a08 Update CURRENT_TASK.md: Phase 7-Step3 complete (config box integration) 
**Updated**:
- Status: Phase 7 Step 1-2 → Step 1-3 (complete)
- Completed Steps: Added Step 3 (Config box integration)
- Benchmark Results: Added Step 3 result (80.6 M ops/s, maintained)
- Technical Details: Added Phase 7-Step3 section with implementation details

**Phase 7-Step3 Summary**:
- Include tiny_front_config_box.h (dead code elimination infrastructure)
- Add wrapper functions: tiny_fastcache_enabled(), sfc_cascade_enabled()
- Performance: 80.6 M ops/s (no regression, infrastructure-only change)
- Foundation for Steps 4-7 (replace runtime checks with compile-time macros)

**Remaining Steps** (updated):
- Step 4: Replace runtime checks → config macros (~20 lines)
- Step 5: Compile library with PGO flag (Makefile change)
- Step 6: Verify dead code elimination in assembly
- Step 7: Measure performance (+5-10% expected)

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 16:35:29 +09:00
Moe Charm (CI)
0e191113ed Update CURRENT_TASK.md: Phase 7 complete (+54.2% improvement!) 2025-11-29 16:20:58 +09:00
Moe Charm (CI)
1468efadd7 Update CURRENT_TASK.md: Phase 6 complete, next phase selection 2025-11-29 15:53:05 +09:00
Moe Charm (CI)
d4d415115f Phase 5: Documentation & Task Update (COMPLETE) 
Phase 5 Mid/Large Allocation Optimization complete with major success.

Achievement:
- Mid MT allocations (1KB-8KB): +28.9x improvement (1.49M → 41.0M ops/s)
- vs System malloc: 1.53x faster (41.0 vs 26.8 M ops/s)
- Mid Free Route Box: Fixed 19x free() slowdown via dual-registry routing

Files:
- PHASE5_COMPLETION_REPORT.md (NEW) - Full completion report with technical details
- CURRENT_TASK.md - Updated with Phase 5 completion and next phase options

Completed Steps:
- Step 1: Mid MT Verification (range bug identified)
- Step 2: Mid Free Route Box (+28.9x improvement)
- Step 3: Mid/Large Config Box (future workload infrastructure)
- Step 4: Deferred (MT workload needed)
- Step 5: Documentation (this commit)

Next Phase Options:
- Option A: Investigate bench_random_mixed regression
- Option B: PGO re-enablement (recommended, +6.25% proven)
- Option C: Expand Tiny Front Config Box
- Option D: Production readiness & benchmarking
- Option E: Multi-threaded optimization

See PHASE5_COMPLETION_REPORT.md for full technical details and CURRENT_TASK.md
for next phase recommendations.

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 14:46:54 +09:00
Moe Charm (CI)
3cc7b675df docs: Start Phase 5 - Mid/Large Allocation Optimization 
Update CURRENT_TASK.md with Phase 5 roadmap:
- Goal: +10-26% improvement (57.2M → 63-72M ops/s)
- Strategy: Fix allocation gap + Config Box + Mid MT optimization
- Duration: 12 days / 2 weeks

Phase 5 Steps:
1. Mid MT Verification (2 days)
2. Allocation Gap Elimination (3 days) - Priority 1
3. Mid/Large Config Box (3 days)
4. Mid Registry Pre-allocation (2 days)
5. Documentation & Benchmark (2 days)

Critical Issue Found:
- 1KB-8KB allocations fall through to mmap() when ACE disabled
- Impact: 1000-5000x slower than O(1) allocation
- Fix: Route through existing Mid MT allocator

Phase 4 Complete:
- Result: 53.3M → 57.2M ops/s (+7.3%)
- PGO deferred to final optimization phase

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 12:30:29 +09:00
Moe Charm (CI)
9bc26be3bb docs: Add Phase 4-Step3 completion report 
Document Config Box implementation results:
- Performance: +2.7-4.9% (50.3 → 52.8 M ops/s)
- Scope: 1 config function, 2 call sites
- Target: Partially achieved (below +5-8% due to limited scope)

Updated CURRENT_TASK.md:
- Marked Step 3 as complete ✅
- Documented actual results vs. targets
- Listed next action options

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 12:20:34 +09:00
Moe Charm (CI)
14e781cf60 docs: Add Phase 4-Step2 completion report 
Documented Hot/Cold Path Box implementation and results:
- Performance: +7.3% improvement (53.3 → 57.2 M ops/s)
- Branch reduction: 4-5 → 1 (hot path)
- Design principles, benchmarks, technical analysis included

Updated CURRENT_TASK.md with Step 2 completion status.

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 12:00:27 +09:00
Moe Charm (CI)
b51b600e8d Phase 4-Step1: Add PGO workflow automation (+6.25% performance) 
Implemented automated Profile-Guided Optimization workflow using Box pattern:

Performance Improvement:
- Baseline:      57.0 M ops/s
- PGO-optimized: 60.6 M ops/s
- Gain: +6.25% (within expected +5-10% range)

Implementation:
1. scripts/box/pgo_tiny_profile_config.sh - 5 representative workloads
2. scripts/box/pgo_tiny_profile_box.sh - Automated profile collection
3. Makefile PGO targets:
   - pgo-tiny-profile: Build instrumented binaries
   - pgo-tiny-collect: Collect .gcda profile data
   - pgo-tiny-build:   Build optimized binaries
   - pgo-tiny-full:    Complete workflow (profile → collect → build → test)
4. Makefile help target: Added PGO instructions for discoverability

Design:
- Box化: Single responsibility, clear contracts
- Deterministic: Fixed seeds (42) for reproducibility
- Safe: Validation, error detection, timeout protection (30s/workload)
- Observable: Progress reporting, .gcda verification (33 files generated)

Workload Coverage:
- Random mixed: 3 working set sizes (128/256/512 slots)
- Tiny hot: 2 size classes (16B/64B)
- Total: 5 workloads covering hot/cold paths

Documentation:
- PHASE4_STEP1_COMPLETE.md - Completion report
- CURRENT_TASK.md - Phase 4 roadmap (Step 1 complete ✓)
- docs/design/PHASE4_TINY_FRONT_BOX_DESIGN.md - Complete Phase 4 design

Next: Phase 4-Step2 (Hot/Cold Path Box, target +10-15%)

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-29 11:28:38 +09:00
Moe Charm (CI)
a9ddb52ad4 ENV cleanup: Remove BG/HotMag vars & guard fprintf (Larson 52.3M ops/s) 
Phase 1 完了：環境変数整理 + fprintf デバッグガード

ENV変数削除（BG/HotMag系）:
- core/hakmem_tiny_init.inc: HotMag ENV 削除 (~131 lines)
- core/hakmem_tiny_bg_spill.c: BG spill ENV 削除
- core/tiny_refill.h: BG remote 固定値化
- core/hakmem_tiny_slow.inc: BG refs 削除

fprintf Debug Guards (#if !HAKMEM_BUILD_RELEASE):
- core/hakmem_shared_pool.c: Lock stats (~18 fprintf)
- core/page_arena.c: Init/Shutdown/Stats (~27 fprintf)
- core/hakmem.c: SIGSEGV init message

ドキュメント整理:
- 328 markdown files 削除（旧レポート・重複docs）

性能確認:
- Larson: 52.35M ops/s (前回52.8M、安定動作✅)
- ENV整理による機能影響なし
- Debug出力は一部残存（次phase で対応）

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-26 14:45:26 +09:00
Moe Charm (CI)
6b38bc840e Cleanup: Remove unused hakmem_libc.c (duplicate of hakmem_syscall.c) 
- File was not included in Makefile OBJS_BASE
- Functions already implemented in hakmem_syscall.c
- Size: 361 bytes removed
 2025-11-26 13:03:17 +09:00