8052e8b320
Summary: - Phase 24 (alloc stats): +0.93% GO - Phase 25 (free stats): +1.07% GO - Phase 26 (diagnostics): -0.33% NEUTRAL (code cleanliness) - Total: 11 atomics compiled-out, +2.00% improvement Phase 24: OBSERVE tax prune (tiny_class_stats_box.h) - Added HAKMEM_TINY_CLASS_STATS_COMPILED (default: 0) - Wrapped 5 stats functions: uc_miss, warm_hit, shared_lock, tls_carve_* - Result: +0.93% (baseline 56.675M vs compiled-in 56.151M ops/s) Phase 25: Tiny free stats prune (tiny_superslab_free.inc.h) - Added HAKMEM_TINY_FREE_STATS_COMPILED (default: 0) - Wrapped g_free_ss_enter atomic in free hot path - Result: +1.07% (baseline 57.017M vs compiled-in 56.415M ops/s) Phase 26: Hot path diagnostic atomics prune - Added 5 compile gates for low-frequency error counters: - HAKMEM_TINY_C7_FREE_COUNT_COMPILED - HAKMEM_TINY_HDR_MISMATCH_LOG_COMPILED - HAKMEM_TINY_HDR_META_MISMATCH_COMPILED - HAKMEM_TINY_METRIC_BAD_CLASS_COMPILED - HAKMEM_TINY_HDR_META_FAST_COMPILED - Result: -0.33% NEUTRAL (within noise, kept for cleanliness) Alignment with mimalloc principles: - "No atomics on hot path" - telemetry moved to compile-time opt-in - Fixed per-op tax elimination - Production builds: maximum performance (atomics compiled-out) - Research builds: full diagnostics (COMPILED=1) Generated with Claude Code https://claude.com/claude-code Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
80 lines
3.2 KiB
Bash
Executable File
80 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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# audit_atomics.sh - Comprehensive atomic operation audit
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# Purpose: Find and classify all atomic operations in hot/warm/cold paths
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# Output: JSON-formatted audit report for Phase 26+ planning
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set -euo pipefail
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CORE_DIR="/mnt/workdisk/public_share/hakmem/core"
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OUTPUT_FILE="/mnt/workdisk/public_share/hakmem/docs/analysis/ATOMIC_AUDIT_FULL.txt"
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echo "=== HAKMEM Atomic Operations Audit ===" > "$OUTPUT_FILE"
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echo "Date: $(date)" >> "$OUTPUT_FILE"
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echo "Purpose: Identify telemetry-only atomics for compile-out (Phase 26+)" >> "$OUTPUT_FILE"
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echo "" >> "$OUTPUT_FILE"
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# Find all atomic_fetch_add/sub operations
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echo "## Part 1: atomic_fetch_add/sub operations" >> "$OUTPUT_FILE"
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echo "" >> "$OUTPUT_FILE"
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rg -n "atomic_fetch_(add|sub)_explicit\(" "$CORE_DIR/" --no-heading | \
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while IFS=: read -r file line code; do
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echo "FILE: $file" >> "$OUTPUT_FILE"
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echo "LINE: $line" >> "$OUTPUT_FILE"
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echo "CODE: $code" >> "$OUTPUT_FILE"
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# Extract variable name
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var=$(echo "$code" | grep -oP '&\K[a-zA-Z_][a-zA-Z0-9_]*(?=\s*,)' || echo "UNKNOWN")
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echo "VAR: $var" >> "$OUTPUT_FILE"
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# Classify based on variable naming patterns
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if echo "$var" | grep -qE '(stats|count|trace|debug|diag|log|metric|observe|enter|exit|hit|miss|attempt|success)'; then
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echo "CLASS: TELEMETRY (candidate for compile-out)" >> "$OUTPUT_FILE"
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elif echo "$var" | grep -qE '(remote|refcount|owner|lock|head|tail|used|active|in_use)'; then
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echo "CLASS: CORRECTNESS (do not touch)" >> "$OUTPUT_FILE"
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else
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echo "CLASS: UNKNOWN (manual review needed)" >> "$OUTPUT_FILE"
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fi
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# Determine path type based on file
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if echo "$file" | grep -qE '(alloc_fast|free_fast|malloc_tiny_fast)'; then
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echo "PATH: HOT (highest priority)" >> "$OUTPUT_FILE"
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elif echo "$file" | grep -qE '(superslab_free|hakmem_tiny_free|tiny_alloc)'; then
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echo "PATH: HOT (high priority)" >> "$OUTPUT_FILE"
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elif echo "$file" | grep -qE '(refill|spill|magazine)'; then
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echo "PATH: WARM (medium priority)" >> "$OUTPUT_FILE"
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else
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echo "PATH: COLD (low priority)" >> "$OUTPUT_FILE"
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fi
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echo "---" >> "$OUTPUT_FILE"
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done
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echo "" >> "$OUTPUT_FILE"
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echo "## Part 2: Summary by Classification" >> "$OUTPUT_FILE"
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echo "" >> "$OUTPUT_FILE"
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# Count telemetry atomics
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TELEMETRY_COUNT=$(grep -c "CLASS: TELEMETRY" "$OUTPUT_FILE" || true)
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CORRECTNESS_COUNT=$(grep -c "CLASS: CORRECTNESS" "$OUTPUT_FILE" || true)
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UNKNOWN_COUNT=$(grep -c "CLASS: UNKNOWN" "$OUTPUT_FILE" || true)
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echo "Total TELEMETRY atomics: $TELEMETRY_COUNT" >> "$OUTPUT_FILE"
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echo "Total CORRECTNESS atomics: $CORRECTNESS_COUNT" >> "$OUTPUT_FILE"
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echo "Total UNKNOWN atomics: $UNKNOWN_COUNT" >> "$OUTPUT_FILE"
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echo "" >> "$OUTPUT_FILE"
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# Count by path
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HOT_COUNT=$(grep -c "PATH: HOT" "$OUTPUT_FILE" || true)
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WARM_COUNT=$(grep -c "PATH: WARM" "$OUTPUT_FILE" || true)
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COLD_COUNT=$(grep -c "PATH: COLD" "$OUTPUT_FILE" || true)
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echo "Hot path atomics: $HOT_COUNT" >> "$OUTPUT_FILE"
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echo "Warm path atomics: $WARM_COUNT" >> "$OUTPUT_FILE"
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echo "Cold path atomics: $COLD_COUNT" >> "$OUTPUT_FILE"
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echo "" >> "$OUTPUT_FILE"
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echo "Audit complete. Review $OUTPUT_FILE for details." >> "$OUTPUT_FILE"
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cat "$OUTPUT_FILE"
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