hakmem

tomoaki/hakmem

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Author	SHA1	Message	Date
Moe Charm (CI)	b7085c47e1	Phase 35-39: FAST build optimization complete (+7.13% cumulative) Phase 35-A: BENCH_MINIMAL gate function elimination (GO +4.39%) - tiny_front_v3_enabled() → constant true - tiny_metadata_cache_enabled() → constant 0 - learner_v7_enabled() → constant false - small_learner_v2_enabled() → constant false Phase 36: Policy snapshot init-once (GO +0.71%) - small_policy_v7_snapshot() version check skip in BENCH_MINIMAL - TLS cache for policy snapshot Phase 37: Standard TLS cache (NO-GO -0.07%) - TLS cache for Standard build attempted - Runtime gate overhead negates benefit Phase 38: FAST/OBSERVE/Standard workflow established - make perf_fast, make perf_observe targets - Scorecard and documentation updates Phase 39: Hot path gate constantization (GO +1.98%) - front_gate_unified_enabled() → constant 1 - alloc_dualhot_enabled() → constant 0 - g_bench_fast_front, g_v3_enabled blocks → compile-out - free_dispatch_stats_enabled() → constant false Results: - FAST v3: 56.04M ops/s (47.4% of mimalloc) - Standard: 53.50M ops/s (45.3% of mimalloc) - M1 target (50%): 5.5% remaining 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>	2025-12-16 15:01:56 +09:00
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

Author

SHA1

Message

Date

Moe Charm (CI)

b7085c47e1

Phase 35-39: FAST build optimization complete (+7.13% cumulative)

Phase 35-A: BENCH_MINIMAL gate function elimination (GO +4.39%)
- tiny_front_v3_enabled() → constant true
- tiny_metadata_cache_enabled() → constant 0
- learner_v7_enabled() → constant false
- small_learner_v2_enabled() → constant false

Phase 36: Policy snapshot init-once (GO +0.71%)
- small_policy_v7_snapshot() version check skip in BENCH_MINIMAL
- TLS cache for policy snapshot

Phase 37: Standard TLS cache (NO-GO -0.07%)
- TLS cache for Standard build attempted
- Runtime gate overhead negates benefit

Phase 38: FAST/OBSERVE/Standard workflow established
- make perf_fast, make perf_observe targets
- Scorecard and documentation updates

Phase 39: Hot path gate constantization (GO +1.98%)
- front_gate_unified_enabled() → constant 1
- alloc_dualhot_enabled() → constant 0
- g_bench_fast_front, g_v3_enabled blocks → compile-out
- free_dispatch_stats_enabled() → constant false

Results:
- FAST v3: 56.04M ops/s (47.4% of mimalloc)
- Standard: 53.50M ops/s (45.3% of mimalloc)
- M1 target (50%): 5.5% remaining

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2025-12-16 15:01:56 +09:00

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

3 Commits