21e2e4ac2b
Target: Eliminate E1 lazy init check overhead (3.22% self%) - E1 consolidated ENV gates but lazy check remained in hot path - Strategy: __attribute__((constructor(101))) for pre-main init Implementation: - ENV gate: HAKMEM_ENV_SNAPSHOT_CTOR=0/1 (default 0, research box) - core/box/hakmem_env_snapshot_box.c: Constructor function added - Reads ENV before main() when CTOR=1 - Refresh also syncs gate state for bench_profile putenv - core/box/hakmem_env_snapshot_box.h: Dual-mode enabled check - CTOR=1 fast path: direct global read (no lazy branch) - CTOR=0 fallback: legacy lazy init (rollback safe) - Branch hints adjusted for default OFF baseline A/B Test Results (Mixed, 10-run, 20M iters, E1=1): - Baseline (CTOR=0): 44.28M ops/s (mean), 44.60M ops/s (median) - Optimized (CTOR=1): 46.38M ops/s (mean), 46.53M ops/s (median) - Improvement: +4.75% mean, +4.35% median Decision: GO (+4.75% >> +0.5% threshold) - Expected +0.5-1.5%, achieved +4.75% - Lazy init branch overhead was larger than expected - Action: Keep as research box (default OFF), evaluate promotion Phase 4 Cumulative: - E1 (ENV Snapshot): +3.92% - E2 (Alloc Per-Class): -0.21% (NEUTRAL, frozen) - E3-4 (Constructor Init): +4.75% - Total Phase 4: ~+8.5% Deliverables: - docs/analysis/PHASE4_E3_ENV_CONSTRUCTOR_INIT_DESIGN.md - docs/analysis/PHASE4_E3_ENV_CONSTRUCTOR_INIT_NEXT_INSTRUCTIONS.md - docs/analysis/PHASE4_COMPREHENSIVE_STATUS_ANALYSIS.md - docs/analysis/PHASE4_EXECUTIVE_SUMMARY.md - scripts/verify_health_profiles.sh (sanity check script) - CURRENT_TASK.md (E3-4 complete, next instructions) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
20 lines
581 B
Bash
Executable File
20 lines
581 B
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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cd "$root_dir"
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if [[ ! -x ./bench_random_mixed_hakmem || ! -x ./bench_mid_large_mt_hakmem ]]; then
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make bench_random_mixed_hakmem bench_mid_large_mt_hakmem -j
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fi
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echo "== Health Profile 1/2: MIXED_TINYV3_C7_SAFE =="
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HAKMEM_PROFILE=MIXED_TINYV3_C7_SAFE ./bench_random_mixed_hakmem 1000000 400 1
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echo
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echo "== Health Profile 2/2: C6_HEAVY_LEGACY_POOLV1 =="
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HAKMEM_PROFILE=C6_HEAVY_LEGACY_POOLV1 ./bench_mid_large_mt_hakmem 1 1000000 400 1
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echo
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echo "OK: health profiles passed"
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