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hakmem/benchmarks/scripts/run_mid_large_mt_matrix.sh

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CRITICAL FIX: TLS 未初期化による 4T SEGV を完全解消 **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>
2025-11-07 01:27:04 +09:00
#!/usr/bin/env bash
set -euo pipefail
# Mid/Large MT (832KiB) matrix runner
# Usage: benchmarks/scripts/run_mid_large_mt_matrix.sh [threads_csv] [cycles] [ws] [reps]
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")"/../.. && pwd)"
cd "$ROOT_DIR"
threads_csv=${1:-"1,4"}
cycles=${2:-40000}
ws=${3:-2048}
reps=${4:-5}
outdir="bench_results/auto/mid_large_mt_$(date +%Y%m%d_%H%M%S)"
mkdir -p "$outdir"
csv="$outdir/results.csv"
echo "ts,scenario,threads,allocator,env,cycles,ws,rep,throughput_ops_s" >"$csv"
IFS=',' read -ra TLIST <<<"$threads_csv"
run_case() {
local thr="$1"; shift
local alloc="$1"; shift
local envstr="$1"; shift
local bin="$1"; shift
for ((i=1;i<=reps;i++)); do
local ts=$(date +%H%M%S)
local out
out=$($envstr "$bin" "$thr" "$cycles" "$ws" 42 2>/dev/null || true)
local tput=$(echo "$out" | awk '/Throughput =/{print $3; exit}')
if [[ -n "${tput:-}" ]]; then
echo "$ts,mid_large_mt,$thr,$alloc,$(echo "$envstr" | sed 's/,/;/g'),$cycles,$ws,$i,$tput" >>"$csv"
fi
done
}
[[ -x ./bench_mid_large_mt_system ]] || make -s bench_mid_large_mt_system >/dev/null
[[ -x ./bench_mid_large_mt_hakmem ]] || make -s bench_mid_large_mt_hakmem >/dev/null
echo "[info] writing CSV to $csv"
for t in "${TLIST[@]}"; do
run_case "$t" "system" "env -i" ./bench_mid_large_mt_system
run_case "$t" "hakmem" "env -i HAKMEM_WRAP_TINY=1" ./bench_mid_large_mt_hakmem
done
echo "[done] $csv"