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Claude 31af3eab27 Add malloc routing analysis and refill success tracking 
### Changes:
- **Routing Counters**: Added per-thread counters in hakmem.c to track:
  - g_malloc_total_calls: Total malloc() invocations
  - g_malloc_tiny_size_match: Calls within tiny size range (<=128B)
  - g_malloc_fast_path_tried: Calls that attempted fast path
  - g_malloc_fast_path_null: Fast path returned NULL
  - g_malloc_slow_path: Calls routed to slow path

- **Refill Success Tracking**: Added counters in tiny_fastcache.c:
  - g_refill_success_count: Full batch (16 blocks)
  - g_refill_partial_count: Partial batch (<16 blocks)
  - g_refill_fail_count: Zero blocks allocated
  - g_refill_total_blocks: Total blocks across all refills

- **Profile Output Enhanced**: tiny_fast_print_profile() now shows:
  - Routing statistics (which path allocations take)
  - Refill success/failure breakdown
  - Average blocks per refill

### Key Findings:
✅ Fast path routing: 100% success (20,479/20,480 calls per thread)
✅ Refill success: 100% (1,285 refills, all 16 blocks each)
⚠️  Performance: Still only 1.68M ops/s vs System's 8.06M (20.8%)

**Root Cause Confirmed**:
- NOT a routing problem (100% reach fast path)
- NOT a refill failure (100% success)
- IS a structural performance issue (2,418 cycles avg for malloc)

**Bottlenecks Identified**:
1. Fast path cache hits: ~2,418 cycles (vs tcache ~100 cycles)
2. Refill operations: ~39,938 cycles (expensive but infrequent)
3. Overall throughput: 4.8x slower than system malloc

**Next Steps** (per LARSON_PERFORMANCE_ANALYSIS_2025_11_05.md):
- Option B: Refill efficiency (batch allocation from SuperSlab)
- Option C: Ultra-fast path redesign (tcache-equivalent)

Related: LARSON_PERFORMANCE_ANALYSIS_2025_11_05.md
2025-11-05 05:56:02 +00:00
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hakmem_ace_controller.c
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hakmem_ace_controller.h
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hakmem_ace_metrics.c
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hakmem_ace_metrics.h
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hakmem_ace_stats.c
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hakmem_ace_stats.h
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hakmem_ace_ucb1.c
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hakmem_ace_ucb1.h
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hakmem_ace.c
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hakmem_ace.h
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hakmem_batch.c
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hakmem_batch.h
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hakmem_bigcache.c
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hakmem_bigcache.h
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hakmem_build_flags.h
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hakmem_config.c
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hakmem_config.h
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hakmem_debug.c
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hakmem_debug.h
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hakmem_elo.c
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hakmem_elo.h
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hakmem_evo.c
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hakmem_evo.h
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hakmem_features.h
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hakmem_internal.h
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hakmem_l25_pool.c
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hakmem_l25_pool.h
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hakmem_learn_log.c
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hakmem_learn_log.h
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hakmem_learner.c
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hakmem_learner.h
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hakmem_libc.c
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hakmem_mid_mt.c
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hakmem_mid_mt.h
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hakmem_p2.c
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hakmem_p2.h
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hakmem_policy.c
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hakmem_policy.h
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hakmem_pool.c
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hakmem_pool.h
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hakmem_prof.c
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hakmem_prof.h
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hakmem_site_rules.c
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hakmem_site_rules.h
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hakmem_size_hist.c
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hakmem_size_hist.h
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hakmem_sizeclass_dist.c
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hakmem_sizeclass_dist.h
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hakmem_super_registry.c
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hakmem_super_registry.h
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hakmem_sys.c
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hakmem_sys.h
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hakmem_syscall.c
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hakmem_syscall.h
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hakmem_tiny_alloc_new.inc
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hakmem_tiny_alloc_v3.inc
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hakmem_tiny_alloc.inc
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hakmem_tiny_assist.inc.h
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hakmem_tiny_background.inc
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hakmem_tiny_batch_refill.h
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hakmem_tiny_bg_bin.inc.h
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hakmem_tiny_bg_spill.c
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hakmem_tiny_bg_spill.h
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hakmem_tiny_bump.inc.h
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hakmem_tiny_config.c
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hakmem_tiny_config.h
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hakmem_tiny_drain_ema.inc.h
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hakmem_tiny_fastcache.inc.h
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hakmem_tiny_free.inc
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hakmem_tiny_hot_pop_v4.inc.h
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hakmem_tiny_hot_pop.inc.h
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hakmem_tiny_hotmag.inc.h
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hakmem_tiny_init.inc
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hakmem_tiny_intel.inc
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hakmem_tiny_lifecycle.inc
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hakmem_tiny_magazine.c
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hakmem_tiny_magazine.h
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hakmem_tiny_metadata.inc
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hakmem_tiny_mini_mag.h
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hakmem_tiny_query_api.h
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hakmem_tiny_query.c
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hakmem_tiny_refill_p0.inc.h
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hakmem_tiny_refill.inc.h
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hakmem_tiny_registry_api.h
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hakmem_tiny_registry.c
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hakmem_tiny_remote_target.c
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hakmem_tiny_remote_target.h
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hakmem_tiny_remote.inc
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hakmem_tiny_rss_api.h
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hakmem_tiny_rss.c
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hakmem_tiny_simple.c
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hakmem_tiny_simple.h
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hakmem_tiny_slab_mgmt.inc
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hakmem_tiny_slow.inc
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hakmem_tiny_smallmag.inc.h
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hakmem_tiny_ss_target.c
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hakmem_tiny_ss_target.h
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hakmem_tiny_stats_api.h
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hakmem_tiny_stats.c
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hakmem_tiny_stats.h
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hakmem_tiny_superslab.c
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hakmem_tiny_superslab.h
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hakmem_tiny_tls_list.h
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hakmem_tiny_tls_ops.h
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hakmem_tiny_ultra_front.inc.h
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hakmem_tiny_ultra_simple.inc
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hakmem_tiny.c
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hakmem_tiny.h
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hakmem_trace.h
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hakmem_ucb1.c
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hakmem_whale.c
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hakmem_whale.h
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hakmem.c
Add malloc routing analysis and refill success tracking
2025-11-05 05:56:02 +00:00
hakmem.h
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mid_tcache.h
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slab_handle.h
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tiny_alloc_fast.inc.h
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tiny_atomic.h
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tiny_debug_ring.c
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tiny_debug_ring.h
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tiny_debug.h
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tiny_fastcache.c
Add malloc routing analysis and refill success tracking
2025-11-05 05:56:02 +00:00
tiny_fastcache.h
Phase 6-8: RDTSC cycle profiling - Critical bottleneck discovered!
2025-11-05 05:44:18 +00:00
tiny_free_fast.inc.h
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tiny_mailbox.c
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tiny_mailbox.h
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tiny_mmap_gate.h
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tiny_publish.c
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tiny_publish.h
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tiny_refill_opt.h
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tiny_refill.h
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tiny_remote.c
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tiny_remote.h
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tiny_sticky.c
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tiny_sticky.h
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tiny_tls_guard.h
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tiny_tls.h
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