1da8754d45
**問題:**
- Larson 4T で 100% SEGV (1T は 2.09M ops/s で完走)
- System/mimalloc は 4T で 33.52M ops/s 正常動作
- SS OFF + Remote OFF でも 4T で SEGV
**根本原因: (Task agent ultrathink 調査結果)**
```
CRASH: mov (%r15),%r13
R15 = 0x6261 ← ASCII "ba" (ゴミ値、未初期化TLS)
```
Worker スレッドの TLS 変数が未初期化:
- `__thread void* g_tls_sll_head[TINY_NUM_CLASSES];` ← 初期化なし
- pthread_create() で生成されたスレッドでゼロ初期化されない
- NULL チェックが通過 (0x6261 != NULL) → dereference → SEGV
**修正内容:**
全 TLS 配列に明示的初期化子 `= {0}` を追加:
1. **core/hakmem_tiny.c:**
- `g_tls_sll_head[TINY_NUM_CLASSES] = {0}`
- `g_tls_sll_count[TINY_NUM_CLASSES] = {0}`
- `g_tls_live_ss[TINY_NUM_CLASSES] = {0}`
- `g_tls_bcur[TINY_NUM_CLASSES] = {0}`
- `g_tls_bend[TINY_NUM_CLASSES] = {0}`
2. **core/tiny_fastcache.c:**
- `g_tiny_fast_cache[TINY_FAST_CLASS_COUNT] = {0}`
- `g_tiny_fast_count[TINY_FAST_CLASS_COUNT] = {0}`
- `g_tiny_fast_free_head[TINY_FAST_CLASS_COUNT] = {0}`
- `g_tiny_fast_free_count[TINY_FAST_CLASS_COUNT] = {0}`
3. **core/hakmem_tiny_magazine.c:**
- `g_tls_mags[TINY_NUM_CLASSES] = {0}`
4. **core/tiny_sticky.c:**
- `g_tls_sticky_ss[TINY_NUM_CLASSES][TINY_STICKY_RING] = {0}`
- `g_tls_sticky_idx[TINY_NUM_CLASSES][TINY_STICKY_RING] = {0}`
- `g_tls_sticky_pos[TINY_NUM_CLASSES] = {0}`
**効果:**
```
Before: 1T: 2.09M ✅ | 4T: SEGV 💀
After: 1T: 2.41M ✅ | 4T: 4.19M ✅ (+15% 1T, SEGV解消)
```
**テスト:**
```bash
# 1 thread: 完走
./larson_hakmem 2 8 128 1024 1 12345 1
→ Throughput = 2,407,597 ops/s ✅
# 4 threads: 完走（以前は SEGV）
./larson_hakmem 2 8 128 1024 1 12345 4
→ Throughput = 4,192,155 ops/s ✅
```
**調査協力:** Task agent (ultrathink mode) による完璧な根本原因特定
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
47 lines
1.4 KiB
Bash
47 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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# Mid/Large MT (8–32KiB) matrix runner
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# Usage: benchmarks/scripts/run_mid_large_mt_matrix.sh [threads_csv] [cycles] [ws] [reps]
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ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")"/../.. && pwd)"
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cd "$ROOT_DIR"
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threads_csv=${1:-"1,4"}
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cycles=${2:-40000}
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ws=${3:-2048}
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reps=${4:-5}
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outdir="bench_results/auto/mid_large_mt_$(date +%Y%m%d_%H%M%S)"
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mkdir -p "$outdir"
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csv="$outdir/results.csv"
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echo "ts,scenario,threads,allocator,env,cycles,ws,rep,throughput_ops_s" >"$csv"
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IFS=',' read -ra TLIST <<<"$threads_csv"
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run_case() {
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local thr="$1"; shift
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local alloc="$1"; shift
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local envstr="$1"; shift
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local bin="$1"; shift
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for ((i=1;i<=reps;i++)); do
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local ts=$(date +%H%M%S)
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local out
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out=$($envstr "$bin" "$thr" "$cycles" "$ws" 42 2>/dev/null || true)
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local tput=$(echo "$out" | awk '/Throughput =/{print $3; exit}')
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if [[ -n "${tput:-}" ]]; then
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echo "$ts,mid_large_mt,$thr,$alloc,$(echo "$envstr" | sed 's/,/;/g'),$cycles,$ws,$i,$tput" >>"$csv"
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fi
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done
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}
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[[ -x ./bench_mid_large_mt_system ]] || make -s bench_mid_large_mt_system >/dev/null
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[[ -x ./bench_mid_large_mt_hakmem ]] || make -s bench_mid_large_mt_hakmem >/dev/null
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echo "[info] writing CSV to $csv"
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for t in "${TLIST[@]}"; do
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run_case "$t" "system" "env -i" ./bench_mid_large_mt_system
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run_case "$t" "hakmem" "env -i HAKMEM_WRAP_TINY=1" ./bench_mid_large_mt_hakmem
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done
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echo "[done] $csv"
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