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4 Commits

Author SHA1 Message Date
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)
f36ebe83aa Phase 4c: Add master trace control (HAKMEM_TRACE) 
Add unified trace control that allows enabling specific trace modules
using comma-separated values or "all" to enable everything.

New file: core/hakmem_trace_master.h
- HAKMEM_TRACE=all: Enable all trace modules
- HAKMEM_TRACE=ptr,refill,free,mailbox: Enable specific modules
- HAKMEM_TRACE_LEVEL=N: Set trace verbosity (1-3)
- hak_trace_check(): Check if module should enable tracing

Available trace modules:
  ptr, refill, superslab, ring, free, mailbox, registry

Priority order:
1. HAKMEM_QUIET=1 → suppress all
2. Specific module ENV (e.g., HAKMEM_PTR_TRACE=1)
3. HAKMEM_TRACE=module1,module2
4. Default → disabled

Updated files:
- core/tiny_refill.h: Use hak_trace_check() for refill tracing
- core/box/mailbox_box.c: Use hak_trace_check() for mailbox tracing

Performance: No regression (72.9M ops/s)

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-28 16:08:44 +09:00
Moe Charm (CI)
43015725af ENV cleanup: Add RELEASE guards to DEBUG ENV variables (14 vars) 
Added compile-time guards (#if HAKMEM_BUILD_RELEASE) to eliminate
DEBUG ENV variable overhead in RELEASE builds.

Variables guarded (14 total):
- HAKMEM_TINY_TRACE_RING, HAKMEM_TINY_DUMP_RING_ATEXIT
- HAKMEM_TINY_RF_TRACE, HAKMEM_TINY_MAILBOX_TRACE
- HAKMEM_TINY_MAILBOX_TRACE_LIMIT, HAKMEM_TINY_MAILBOX_SLOWDISC
- HAKMEM_TINY_MAILBOX_SLOWDISC_PERIOD
- HAKMEM_SS_PREWARM_DEBUG, HAKMEM_SS_FREE_DEBUG
- HAKMEM_TINY_FRONT_METRICS, HAKMEM_TINY_FRONT_DUMP
- HAKMEM_TINY_COUNTERS_DUMP, HAKMEM_TINY_REFILL_DUMP
- HAKMEM_PTR_TRACE_DUMP, HAKMEM_PTR_TRACE_VERBOSE

Files modified (9 core files):
- core/tiny_debug_ring.c (ring trace/dump)
- core/box/mailbox_box.c (mailbox trace + slowdisc)
- core/tiny_refill.h (refill trace)
- core/hakmem_tiny_superslab.c (superslab debug)
- core/box/ss_allocation_box.c (allocation debug)
- core/tiny_superslab_free.inc.h (free debug)
- core/box/front_metrics_box.c (frontend metrics)
- core/hakmem_tiny_stats.c (stats dump)
- core/ptr_trace.h (pointer trace)

Bug fixes during implementation:
1. mailbox_box.c - Fixed variable scope (moved 'used' outside guard)
2. hakmem_tiny_stats.c - Fixed incomplete declarations (on1, on2)

Impact:
- Binary size: -85KB total
  - bench_random_mixed_hakmem: 319K → 305K (-14K, -4.4%)
  - larson_hakmem: 380K → 309K (-71K, -18.7%)
- Performance: No regression (16.9-17.9M ops/s maintained)
- Functional: All tests pass (Random Mixed + Larson)
- Behavior: DEBUG ENV vars correctly ignored in RELEASE builds

Testing:
- Build: Clean compilation (warnings only, pre-existing)
- 100K Random Mixed: 16.9-17.9M ops/s (PASS)
- 10K Larson: 25.9M ops/s (PASS)
- DEBUG ENV verification: Correctly ignored (PASS)

Result: 14 DEBUG ENV variables now have zero overhead in RELEASE builds.

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-27 03:41:07 +09:00
Moe Charm (CI)
1da8754d45 CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消 
**問題:**
- Larson 4T で 100% SEGV (1T は 2.09M ops/s で完走)
- System/mimalloc は 4T で 33.52M ops/s 正常動作
- SS OFF + Remote OFF でも 4T で SEGV

**根本原因: (Task agent ultrathink 調査結果)**
```
CRASH: mov (%r15),%r13
R15 = 0x6261  ← ASCII "ba" (ゴミ値、未初期化TLS)
```

Worker スレッドの TLS 変数が未初期化:
- `__thread void* g_tls_sll_head[TINY_NUM_CLASSES];`  ← 初期化なし
- pthread_create() で生成されたスレッドでゼロ初期化されない
- NULL チェックが通過 (0x6261 != NULL) → dereference → SEGV

**修正内容:**
全 TLS 配列に明示的初期化子 `= {0}` を追加:

1. **core/hakmem_tiny.c:**
   - `g_tls_sll_head[TINY_NUM_CLASSES] = {0}`
   - `g_tls_sll_count[TINY_NUM_CLASSES] = {0}`
   - `g_tls_live_ss[TINY_NUM_CLASSES] = {0}`
   - `g_tls_bcur[TINY_NUM_CLASSES] = {0}`
   - `g_tls_bend[TINY_NUM_CLASSES] = {0}`

2. **core/tiny_fastcache.c:**
   - `g_tiny_fast_cache[TINY_FAST_CLASS_COUNT] = {0}`
   - `g_tiny_fast_count[TINY_FAST_CLASS_COUNT] = {0}`
   - `g_tiny_fast_free_head[TINY_FAST_CLASS_COUNT] = {0}`
   - `g_tiny_fast_free_count[TINY_FAST_CLASS_COUNT] = {0}`

3. **core/hakmem_tiny_magazine.c:**
   - `g_tls_mags[TINY_NUM_CLASSES] = {0}`

4. **core/tiny_sticky.c:**
   - `g_tls_sticky_ss[TINY_NUM_CLASSES][TINY_STICKY_RING] = {0}`
   - `g_tls_sticky_idx[TINY_NUM_CLASSES][TINY_STICKY_RING] = {0}`
   - `g_tls_sticky_pos[TINY_NUM_CLASSES] = {0}`

**効果:**
```
Before: 1T: 2.09M ✅  |  4T: SEGV 💀
After:  1T: 2.41M ✅  |  4T: 4.19M ✅  (+15% 1T, SEGV解消)
```

**テスト:**
```bash
# 1 thread: 完走
./larson_hakmem 2 8 128 1024 1 12345 1
→ Throughput = 2,407,597 ops/s ✅

# 4 threads: 完走（以前は SEGV）
./larson_hakmem 2 8 128 1024 1 12345 4
→ Throughput = 4,192,155 ops/s ✅
```

**調査協力:** Task agent (ultrathink mode) による完璧な根本原因特定

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-07 01:27:04 +09:00