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Author	SHA1	Message	Date
Moe Charm (CI)	70ad1ffb87	Tiny: Enable P0→FC direct path for class7 (1KB) by default + docs - Class7 (1KB): P0 direct-to-FastCache now default ON (HAKMEM_TINY_P0_DIRECT_FC_C7 unset or not '0'). - Keep A/B gates: HAKMEM_TINY_P0_ENABLE, HAKMEM_TINY_P0_DIRECT_FC (class5), HAKMEM_TINY_P0_DIRECT_FC_C7 (class7), HAKMEM_TINY_P0_DRAIN_THRESH (default 32), HAKMEM_TINY_P0_NO_DRAIN, HAKMEM_TINY_P0_LOG. - P0 batch now supports class7 direct fill in addition to class5: gather (drain thresholded → freelist pop → linear carve) without writing into objects, then bulk-push into FC, update meta/active counters once. - Docs: Update direct-FC defaults (class5+class7 ON) in docs/TINY_P0_BATCH_REFILL.md. Notes - Use tools/bench_rs_from_files.sh for RS(hakmem/system) to compare runs across CPUs. - Next: parameter sweep for class7 (FC cap/batch limit/drain threshold) and perf counters A/B.	2025-11-09 23:15:02 +09:00
Moe Charm (CI)	d9b334b968	Tiny: Enable P0 batch refill by default + docs and task update Summary - Default P0 ON: Build-time HAKMEM_TINY_P0_BATCH_REFILL=1 remains; runtime gate now defaults to ON (HAKMEM_TINY_P0_ENABLE unset or not '0'). Kill switch preserved via HAKMEM_TINY_P0_DISABLE=1. - Fix critical bug: After freelist→SLL batch splice, increment TinySlabMeta::used by 'from_freelist' to mirror non-P0 behavior (prevents under-accounting and follow-on carve invariants from breaking). - Add low-overhead A/B toggles for triage: HAKMEM_TINY_P0_NO_DRAIN (skip remote drain), HAKMEM_TINY_P0_LOG (emit [P0_COUNTER_OK/MISMATCH] based on total_active_blocks delta). - Keep linear carve fail-fast guards across simple/general/TLS-bump paths. Perf (1T, 100k×256B) - P0 OFF: ~2.73M ops/s (stable) - P0 ON (no drain): ~2.45M ops/s - P0 ON (normal drain): ~2.76M ops/s (fastest) Known - Rare [P0_COUNTER_MISMATCH] warnings persist (non-fatal). Continue auditing active/used balance around batch freelist splice and remote drain splice. Docs - Add docs/TINY_P0_BATCH_REFILL.md (runtime switches, behavior, perf notes). - Update CURRENT_TASK.md with Tiny P0 status (default ON) and next steps.	2025-11-09 22:12:34 +09:00

Author

SHA1

Message

Date

Moe Charm (CI)

70ad1ffb87

Tiny: Enable P0→FC direct path for class7 (1KB) by default + docs

- Class7 (1KB): P0 direct-to-FastCache now default ON (HAKMEM_TINY_P0_DIRECT_FC_C7 unset or not '0').
- Keep A/B gates: HAKMEM_TINY_P0_ENABLE, HAKMEM_TINY_P0_DIRECT_FC (class5), HAKMEM_TINY_P0_DIRECT_FC_C7 (class7),
  HAKMEM_TINY_P0_DRAIN_THRESH (default 32), HAKMEM_TINY_P0_NO_DRAIN, HAKMEM_TINY_P0_LOG.
- P0 batch now supports class7 direct fill in addition to class5: gather (drain thresholded → freelist pop → linear carve)
  without writing into objects, then bulk-push into FC, update meta/active counters once.
- Docs: Update direct-FC defaults (class5+class7 ON) in docs/TINY_P0_BATCH_REFILL.md.

Notes
- Use tools/bench_rs_from_files.sh for RS(hakmem/system) to compare runs across CPUs.
- Next: parameter sweep for class7 (FC cap/batch limit/drain threshold) and perf counters A/B.

2025-11-09 23:15:02 +09:00

Moe Charm (CI)

d9b334b968

Tiny: Enable P0 batch refill by default + docs and task update

Summary
- Default P0 ON: Build-time HAKMEM_TINY_P0_BATCH_REFILL=1 remains; runtime gate now defaults to ON
  (HAKMEM_TINY_P0_ENABLE unset or not '0'). Kill switch preserved via HAKMEM_TINY_P0_DISABLE=1.
- Fix critical bug: After freelist→SLL batch splice, increment TinySlabMeta::used by 'from_freelist'
  to mirror non-P0 behavior (prevents under-accounting and follow-on carve invariants from breaking).
- Add low-overhead A/B toggles for triage: HAKMEM_TINY_P0_NO_DRAIN (skip remote drain),
  HAKMEM_TINY_P0_LOG (emit [P0_COUNTER_OK/MISMATCH] based on total_active_blocks delta).
- Keep linear carve fail-fast guards across simple/general/TLS-bump paths.

Perf (1T, 100k×256B)
- P0 OFF: ~2.73M ops/s (stable)
- P0 ON (no drain): ~2.45M ops/s
- P0 ON (normal drain): ~2.76M ops/s (fastest)

Known
- Rare [P0_COUNTER_MISMATCH] warnings persist (non-fatal). Continue auditing active/used
  balance around batch freelist splice and remote drain splice.

Docs
- Add docs/TINY_P0_BATCH_REFILL.md (runtime switches, behavior, perf notes).
- Update CURRENT_TASK.md with Tiny P0 status (default ON) and next steps.

2025-11-09 22:12:34 +09:00

2 Commits