52386401b3
Major Features: - Debug counter infrastructure for Refill Stage tracking - Free Pipeline counters (ss_local, ss_remote, tls_sll) - Diagnostic counters for early return analysis - Unified larson.sh benchmark runner with profiles - Phase 6-3 regression analysis documentation Bug Fixes: - Fix SuperSlab disabled by default (HAKMEM_TINY_USE_SUPERSLAB) - Fix profile variable naming consistency - Add .gitignore patterns for large files Performance: - Phase 6-3: 4.79 M ops/s (has OOM risk) - With SuperSlab: 3.13 M ops/s (+19% improvement) This is a clean repository without large log files. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
34 lines
1.0 KiB
Markdown
34 lines
1.0 KiB
Markdown
# Next Steps Plan (2025-10-22)
|
||
|
||
## Scope (P1.1)
|
||
|
||
- Tiny remote-free MPSC + adaptive magazine (DONE baseline; extend drains)
|
||
- false sharing mitigation (L2.5 padded locks, stats aligned) (DONE)
|
||
- L2 page bundle prefetch (DONE)
|
||
- L2/L2.5 mmap-backed bundles (DONE)
|
||
|
||
## Recommended Next Work
|
||
|
||
1) Tiny improvements
|
||
- Drain MPSC from full-slabs opportunistically during alloc slow path
|
||
- Promote slabs from full→free immediately after remote drain
|
||
- Make magazine CAP adaptive per site (simple top-K sites)
|
||
|
||
2) L2/L2.5 bundle policy
|
||
- L2: multi-bundle refill when hit/miss ratio degrades in window
|
||
- L2.5: demand-zero (MADV_DONTNEED) policy for 512KB/1MB on cold sites
|
||
|
||
3) Site-bucket policy table (ACE)
|
||
- Site×sizeバケットの1バイト方策テーブル（読み出し無ロック、更新は窓時）
|
||
|
||
## Env toggles
|
||
|
||
- Site Rules: `HAKMEM_SITE_RULES=1`
|
||
- EVO sampling: `HAKMEM_EVO_SAMPLE=N`
|
||
|
||
## Notes
|
||
|
||
- Keep hot path reads lock-free; learning/updates only on window close
|
||
- Prefer per-shard/per-site state to avoid global contention
|
||
|