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87b7d30998
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Phase 9: SuperSlab optimization & EMPTY slab recycling (WIP)
Phase 9-1: O(1) SuperSlab lookup optimization
- Created ss_addr_map_box: Hash table (8192 buckets) for O(1) SuperSlab lookup
- Created ss_tls_hint_box: TLS caching layer for SuperSlab hints
- Integrated hash table into registry (init, insert, remove, lookup)
- Modified hak_super_lookup() to use new hash table
- Expected: 50-80 cycles → 10-20 cycles (not verified - SuperSlab disabled by default)
Phase 9-2: EMPTY slab recycling implementation
- Created slab_recycling_box: SLAB_TRY_RECYCLE() macro following Box pattern
- Integrated into remote drain (superslab_slab.c)
- Integrated into TLS SLL drain (tls_sll_drain_box.h) with touched slab tracking
- Observable: Debug tracing via HAKMEM_SLAB_RECYCLE_TRACE
- Updated Makefile: Added new box objects to 3 build targets
Known Issues:
- SuperSlab registry exhaustion still occurs (unregistration not working)
- shared_pool_release_slab() may not be removing from g_super_reg[]
- Needs investigation before Phase 9-2 can be completed
Expected Impact (when fixed):
- Stage 1 hit rate: 0% → 80%
- shared_fail events: 4 → 0
- Kernel overhead: 55% → 15%
- Throughput: 16.5M → 25-30M ops/s (+50-80%)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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2025-11-30 07:16:50 +09:00 |
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