2025-11-09 18:55:50 +09:00
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hakmem_tiny_magazine.o: core/hakmem_tiny_magazine.c \
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core/hakmem_tiny_magazine.h core/hakmem_tiny.h core/hakmem_build_flags.h \
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2025-12-03 10:34:39 +09:00
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core/hakmem_trace.h core/hakmem_tiny_mini_mag.h \
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core/box/hak_lane_classify.inc.h core/box/ptr_type_box.h \
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2025-11-09 18:55:50 +09:00
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core/hakmem_tiny_config.h core/hakmem_tiny_superslab.h \
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core/superslab/superslab_types.h core/hakmem_tiny_superslab_constants.h \
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core/superslab/superslab_inline.h core/superslab/superslab_types.h \
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2025-11-26 12:33:49 +09:00
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core/superslab/../tiny_box_geometry.h \
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core/superslab/../hakmem_tiny_superslab_constants.h \
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2025-12-10 09:08:18 +09:00
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core/superslab/../hakmem_tiny_config.h \
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core/superslab/../hakmem_super_registry.h \
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core/superslab/../hakmem_tiny_superslab.h \
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core/superslab/../box/ss_addr_map_box.h \
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core/superslab/../box/../hakmem_build_flags.h \
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Phase 3 D2: Wrapper Env Cache - [DECISION: NO-GO]
Target: Reduce wrapper_env_cfg() overhead in malloc/free hot path
- Strategy: Cache wrapper env configuration pointer in TLS
- Approach: Fast pointer cache (TLS caches const wrapper_env_cfg_t*)
Implementation:
- core/box/wrapper_env_cache_env_box.h: ENV gate (HAKMEM_WRAP_ENV_CACHE)
- core/box/wrapper_env_cache_box.h: TLS cache layer (wrapper_env_cfg_fast)
- core/box/hak_wrappers.inc.h: Integration into malloc/free hot paths
- ENV gate: HAKMEM_WRAP_ENV_CACHE=0/1 (default OFF)
A/B Test Results (Mixed, 10-run, 20M iters):
- Baseline (D2=0): 46.52M ops/s (avg), 46.47M ops/s (median)
- Optimized (D2=1): 45.85M ops/s (avg), 45.98M ops/s (median)
- Improvement: avg -1.44%, median -1.05% (DECISION: NO-GO)
Analysis:
- Regression cause: TLS cache adds overhead (branch + TLS access)
- wrapper_env_cfg() is already minimal (pointer return after simple check)
- Adding TLS caching layer makes it worse, not better
- Branch prediction penalty outweighs any potential savings
Cumulative Phase 2-3:
- B3: +2.89%, B4: +1.47%, C3: +2.20%
- D1: +1.06% (opt-in), D2: -1.44% (NO-GO)
- Total: ~7.2% (excluding D2)
Decision: FREEZE as research box (default OFF, regression confirmed)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2025-12-13 22:03:27 +09:00
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core/superslab/../box/super_reg_box.h \
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core/superslab/../box/ss_pt_lookup_box.h \
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core/superslab/../box/ss_pt_types_box.h \
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core/superslab/../box/ss_pt_env_box.h \
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core/superslab/../box/ss_pt_env_box.h core/tiny_debug_ring.h \
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2025-11-26 12:33:49 +09:00
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core/tiny_remote.h core/hakmem_tiny_superslab_constants.h \
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2025-12-07 03:12:27 +09:00
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core/hakmem_prof.h core/hakmem_internal.h core/hakmem.h \
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core/hakmem_config.h core/hakmem_features.h core/hakmem_sys.h \
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core/hakmem_whale.h core/box/tiny_next_ptr_box.h \
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core/hakmem_tiny_config.h core/tiny_nextptr.h core/tiny_region_id.h \
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core/tiny_box_geometry.h core/ptr_track.h core/tiny_debug_api.h \
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2025-12-17 21:08:17 +09:00
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core/box/tiny_header_hotfull_env_box.h core/box/../hakmem_build_flags.h \
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core/box/tiny_layout_box.h core/box/../hakmem_tiny_config.h \
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Phase 29: Pool Hotbox v2 Stats Prune - NO-OP (infrastructure ready)
Target: g_pool_hotbox_v2_stats atomics (12 total) in Pool v2
Result: 0.00% impact (code path inactive by default, ENV-gated)
Verdict: NO-OP - Maintain compile-out for future-proofing
Audit Results:
- Classification: 12/12 TELEMETRY (100% observational)
- Counters: alloc_calls, alloc_fast, alloc_refill, alloc_refill_fail,
alloc_fallback_v1, free_calls, free_fast, free_fallback_v1,
page_of_fail_* (4 failure counters)
- Verification: All stats/logging only, zero flow control usage
- Phase 28 lesson applied: Traced all usages, confirmed no CORRECTNESS
Key Finding: Pool v2 OFF by default
- Requires HAKMEM_POOL_V2_ENABLED=1 to activate
- Benchmark never executes Pool v2 code paths
- Compile-out has zero performance impact (code never runs)
Implementation (future-ready):
- Added HAKMEM_POOL_HOTBOX_V2_STATS_COMPILED (default: 0)
- Wrapped 13 atomic write sites in core/hakmem_pool.c
- Pattern: #if HAKMEM_POOL_HOTBOX_V2_STATS_COMPILED ... #endif
- Expected impact if Pool v2 enabled: +0.3~0.8% (HOT+WARM atomics)
A/B Test Results:
- Baseline (COMPILED=0): 52.98 M ops/s (±0.43M, 0.81% stdev)
- Research (COMPILED=1): 53.31 M ops/s (±0.80M, 1.50% stdev)
- Delta: -0.62% (noise, not real effect - code path not active)
Critical Lesson Learned (NEW):
Phase 29 revealed ENV-gated features can appear on hot paths but never
execute. Updated audit checklist:
1. Classify atomics (CORRECTNESS vs TELEMETRY)
2. Verify no flow control usage
3. NEW: Verify code path is ACTIVE in benchmark (check ENV gates)
4. Implement compile-out
5. A/B test
Verification methods added to documentation:
- rg "getenv.*FEATURE" to check ENV gates
- perf record/report to verify execution
- Debug printf for quick validation
Cumulative Progress (Phase 24-29):
- Phase 24 (class stats): +0.93% GO
- Phase 25 (free stats): +1.07% GO
- Phase 26 (diagnostics): -0.33% NEUTRAL
- Phase 27 (unified cache): +0.74% GO
- Phase 28 (bg spill): NO-OP (all CORRECTNESS)
- Phase 29 (pool v2): NO-OP (inactive code path)
- Total: 17 atomics removed, +2.74% improvement
Documentation:
- PHASE29_POOL_HOTBOX_V2_AUDIT.md: Complete audit with TELEMETRY classification
- PHASE29_POOL_HOTBOX_V2_STATS_RESULTS.md: Results + new lesson learned
- ATOMIC_PRUNE_CUMULATIVE_SUMMARY.md: Updated with Phase 29 + new checklist
- PHASE29_COMPLETE.md: Completion summary with recommendations
Decision: Keep compile-out despite NO-OP
- Code cleanliness (binary size reduction)
- Future-proofing (ready when Pool v2 enabled)
- Consistency with Phase 24-28 pattern
Generated with Claude Code
https://claude.com/claude-code
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-16 06:33:41 +09:00
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core/box/tiny_header_box.h core/box/tiny_layout_box.h \
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core/box/../tiny_region_id.h core/box/tiny_header_write_once_env_box.h \
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core/box/tiny_mem_stats_box.h
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2025-11-09 18:55:50 +09:00
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core/hakmem_tiny_magazine.h:
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core/hakmem_tiny.h:
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core/hakmem_build_flags.h:
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core/hakmem_trace.h:
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core/hakmem_tiny_mini_mag.h:
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2025-12-03 10:34:39 +09:00
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core/box/hak_lane_classify.inc.h:
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2025-12-01 16:37:59 +09:00
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core/box/ptr_type_box.h:
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2025-11-09 18:55:50 +09:00
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core/hakmem_tiny_config.h:
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core/hakmem_tiny_superslab.h:
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core/superslab/superslab_types.h:
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core/hakmem_tiny_superslab_constants.h:
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core/superslab/superslab_inline.h:
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core/superslab/superslab_types.h:
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2025-11-26 12:33:49 +09:00
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core/superslab/../tiny_box_geometry.h:
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core/superslab/../hakmem_tiny_superslab_constants.h:
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core/superslab/../hakmem_tiny_config.h:
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2025-12-10 09:08:18 +09:00
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core/superslab/../hakmem_super_registry.h:
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core/superslab/../hakmem_tiny_superslab.h:
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core/superslab/../box/ss_addr_map_box.h:
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core/superslab/../box/../hakmem_build_flags.h:
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core/superslab/../box/super_reg_box.h:
|
Phase 3 D2: Wrapper Env Cache - [DECISION: NO-GO]
Target: Reduce wrapper_env_cfg() overhead in malloc/free hot path
- Strategy: Cache wrapper env configuration pointer in TLS
- Approach: Fast pointer cache (TLS caches const wrapper_env_cfg_t*)
Implementation:
- core/box/wrapper_env_cache_env_box.h: ENV gate (HAKMEM_WRAP_ENV_CACHE)
- core/box/wrapper_env_cache_box.h: TLS cache layer (wrapper_env_cfg_fast)
- core/box/hak_wrappers.inc.h: Integration into malloc/free hot paths
- ENV gate: HAKMEM_WRAP_ENV_CACHE=0/1 (default OFF)
A/B Test Results (Mixed, 10-run, 20M iters):
- Baseline (D2=0): 46.52M ops/s (avg), 46.47M ops/s (median)
- Optimized (D2=1): 45.85M ops/s (avg), 45.98M ops/s (median)
- Improvement: avg -1.44%, median -1.05% (DECISION: NO-GO)
Analysis:
- Regression cause: TLS cache adds overhead (branch + TLS access)
- wrapper_env_cfg() is already minimal (pointer return after simple check)
- Adding TLS caching layer makes it worse, not better
- Branch prediction penalty outweighs any potential savings
Cumulative Phase 2-3:
- B3: +2.89%, B4: +1.47%, C3: +2.20%
- D1: +1.06% (opt-in), D2: -1.44% (NO-GO)
- Total: ~7.2% (excluding D2)
Decision: FREEZE as research box (default OFF, regression confirmed)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2025-12-13 22:03:27 +09:00
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core/superslab/../box/ss_pt_lookup_box.h:
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core/superslab/../box/ss_pt_types_box.h:
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core/superslab/../box/ss_pt_env_box.h:
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core/superslab/../box/ss_pt_env_box.h:
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2025-11-09 18:55:50 +09:00
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core/tiny_debug_ring.h:
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core/tiny_remote.h:
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core/hakmem_tiny_superslab_constants.h:
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core/hakmem_prof.h:
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core/hakmem_internal.h:
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core/hakmem.h:
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core/hakmem_config.h:
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core/hakmem_features.h:
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core/hakmem_sys.h:
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core/hakmem_whale.h:
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2025-11-14 01:02:00 +09:00
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core/box/tiny_next_ptr_box.h:
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core/hakmem_tiny_config.h:
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core/tiny_nextptr.h:
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2025-11-21 23:00:24 +09:00
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core/tiny_region_id.h:
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core/tiny_box_geometry.h:
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core/ptr_track.h:
|
2025-11-29 06:47:13 +09:00
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|
core/tiny_debug_api.h:
|
Phase 29: Pool Hotbox v2 Stats Prune - NO-OP (infrastructure ready)
Target: g_pool_hotbox_v2_stats atomics (12 total) in Pool v2
Result: 0.00% impact (code path inactive by default, ENV-gated)
Verdict: NO-OP - Maintain compile-out for future-proofing
Audit Results:
- Classification: 12/12 TELEMETRY (100% observational)
- Counters: alloc_calls, alloc_fast, alloc_refill, alloc_refill_fail,
alloc_fallback_v1, free_calls, free_fast, free_fallback_v1,
page_of_fail_* (4 failure counters)
- Verification: All stats/logging only, zero flow control usage
- Phase 28 lesson applied: Traced all usages, confirmed no CORRECTNESS
Key Finding: Pool v2 OFF by default
- Requires HAKMEM_POOL_V2_ENABLED=1 to activate
- Benchmark never executes Pool v2 code paths
- Compile-out has zero performance impact (code never runs)
Implementation (future-ready):
- Added HAKMEM_POOL_HOTBOX_V2_STATS_COMPILED (default: 0)
- Wrapped 13 atomic write sites in core/hakmem_pool.c
- Pattern: #if HAKMEM_POOL_HOTBOX_V2_STATS_COMPILED ... #endif
- Expected impact if Pool v2 enabled: +0.3~0.8% (HOT+WARM atomics)
A/B Test Results:
- Baseline (COMPILED=0): 52.98 M ops/s (±0.43M, 0.81% stdev)
- Research (COMPILED=1): 53.31 M ops/s (±0.80M, 1.50% stdev)
- Delta: -0.62% (noise, not real effect - code path not active)
Critical Lesson Learned (NEW):
Phase 29 revealed ENV-gated features can appear on hot paths but never
execute. Updated audit checklist:
1. Classify atomics (CORRECTNESS vs TELEMETRY)
2. Verify no flow control usage
3. NEW: Verify code path is ACTIVE in benchmark (check ENV gates)
4. Implement compile-out
5. A/B test
Verification methods added to documentation:
- rg "getenv.*FEATURE" to check ENV gates
- perf record/report to verify execution
- Debug printf for quick validation
Cumulative Progress (Phase 24-29):
- Phase 24 (class stats): +0.93% GO
- Phase 25 (free stats): +1.07% GO
- Phase 26 (diagnostics): -0.33% NEUTRAL
- Phase 27 (unified cache): +0.74% GO
- Phase 28 (bg spill): NO-OP (all CORRECTNESS)
- Phase 29 (pool v2): NO-OP (inactive code path)
- Total: 17 atomics removed, +2.74% improvement
Documentation:
- PHASE29_POOL_HOTBOX_V2_AUDIT.md: Complete audit with TELEMETRY classification
- PHASE29_POOL_HOTBOX_V2_STATS_RESULTS.md: Results + new lesson learned
- ATOMIC_PRUNE_CUMULATIVE_SUMMARY.md: Updated with Phase 29 + new checklist
- PHASE29_COMPLETE.md: Completion summary with recommendations
Decision: Keep compile-out despite NO-OP
- Code cleanliness (binary size reduction)
- Future-proofing (ready when Pool v2 enabled)
- Consistency with Phase 24-28 pattern
Generated with Claude Code
https://claude.com/claude-code
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-16 06:33:41 +09:00
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|
core/box/tiny_header_hotfull_env_box.h:
|
2025-12-17 21:08:17 +09:00
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|
core/box/../hakmem_build_flags.h:
|
2025-12-03 13:28:44 +09:00
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core/box/tiny_layout_box.h:
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|
core/box/../hakmem_tiny_config.h:
|
Phase 3 D2: Wrapper Env Cache - [DECISION: NO-GO]
Target: Reduce wrapper_env_cfg() overhead in malloc/free hot path
- Strategy: Cache wrapper env configuration pointer in TLS
- Approach: Fast pointer cache (TLS caches const wrapper_env_cfg_t*)
Implementation:
- core/box/wrapper_env_cache_env_box.h: ENV gate (HAKMEM_WRAP_ENV_CACHE)
- core/box/wrapper_env_cache_box.h: TLS cache layer (wrapper_env_cfg_fast)
- core/box/hak_wrappers.inc.h: Integration into malloc/free hot paths
- ENV gate: HAKMEM_WRAP_ENV_CACHE=0/1 (default OFF)
A/B Test Results (Mixed, 10-run, 20M iters):
- Baseline (D2=0): 46.52M ops/s (avg), 46.47M ops/s (median)
- Optimized (D2=1): 45.85M ops/s (avg), 45.98M ops/s (median)
- Improvement: avg -1.44%, median -1.05% (DECISION: NO-GO)
Analysis:
- Regression cause: TLS cache adds overhead (branch + TLS access)
- wrapper_env_cfg() is already minimal (pointer return after simple check)
- Adding TLS caching layer makes it worse, not better
- Branch prediction penalty outweighs any potential savings
Cumulative Phase 2-3:
- B3: +2.89%, B4: +1.47%, C3: +2.20%
- D1: +1.06% (opt-in), D2: -1.44% (NO-GO)
- Total: ~7.2% (excluding D2)
Decision: FREEZE as research box (default OFF, regression confirmed)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2025-12-13 22:03:27 +09:00
|
|
|
core/box/tiny_header_box.h:
|
2025-12-03 13:28:44 +09:00
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|
core/box/tiny_layout_box.h:
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|
|
core/box/../tiny_region_id.h:
|
2025-12-14 16:28:23 +09:00
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|
core/box/tiny_header_write_once_env_box.h:
|
2025-12-07 03:12:27 +09:00
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|
core/box/tiny_mem_stats_box.h:
|