diff --git a/plan_exec.md b/plan_exec.md
index d0c54d5..81b28b8 100644
--- a/plan_exec.md
+++ b/plan_exec.md
@@ -18,3 +18,21 @@
 - 运行烟测：
   - `mace` 与 `rocksdb` 均可按新参数运行并写入统一 schema 结果文件
 - 提交：待本阶段 commit
+
+## Phase 1（已完成）
+- 日期：2026-03-03
+- 范围：
+  - 新增 `scripts/phase1.sh`：按文档矩阵执行小规模试跑
+    - dataset：`tier-s`
+    - workload：`W1/W3/W6`
+    - profile：`P2/P3`
+    - threads：`1/12`
+    - repeats：默认 `3`（可由 `REPEATS` 覆盖）
+  - 新增 `scripts/phase1_eval.py`：按 case 聚合并计算
+    - throughput CV
+    - p99 CV
+    - 稳定性通过率（门槛：throughput CV<=10%, p99 CV<=15%）
+- 验证：
+  - `bash -n scripts/phase1.sh` 通过
+  - `python3 -m py_compile scripts/phase1_eval.py` 通过
+- 提交：待本阶段 commit
diff --git a/scripts/phase1.sh b/scripts/phase1.sh
new file mode 100755
index 0000000..b95f649
--- /dev/null
+++ b/scripts/phase1.sh
@@ -0,0 +1,117 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [ "$#" -lt 1 ] || [ "$#" -gt 2 ]; then
+    printf "Usage: %s <db_root_under_/nvme> [result_csv]\n" "$0"
+    exit 1
+fi
+
+script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+root_dir="$(cd -- "${script_dir}/.." && pwd)"
+
+if [[ "$1" != /nvme* ]]; then
+    printf "db_root must be under /nvme, got: %s\n" "$1" >&2
+    exit 1
+fi
+
+db_root="$1"
+result_file="${2:-${script_dir}/phase1_results.csv}"
+
+warmup_secs="${WARMUP_SECS:-120}"
+measure_secs="${MEASURE_SECS:-300}"
+repeats="${REPEATS:-3}"
+read_path="${READ_PATH:-snapshot}"
+
+mkdir -p "${db_root}"
+mkdir -p "$(dirname -- "${result_file}")"
+
+cargo build --release --manifest-path "${root_dir}/Cargo.toml"
+(cd "${root_dir}/rocksdb" && cmake --preset release)
+(cd "${root_dir}/rocksdb" && cmake --build --preset release)
+
+workloads=(W1 W3 W6)
+threads=(1 12)
+profiles=(P2 P3)
+
+profile_key() {
+    case "$1" in
+        P2) echo 32 ;;
+        P3) echo 32 ;;
+        *) printf "unknown profile: %s\n" "$1" >&2; exit 1 ;;
+    esac
+}
+
+profile_val() {
+    case "$1" in
+        P2) echo 1024 ;;
+        P3) echo 16384 ;;
+        *) printf "unknown profile: %s\n" "$1" >&2; exit 1 ;;
+    esac
+}
+
+profile_prefill_tier_s() {
+    case "$1" in
+        P2) echo 6100805 ;;
+        P3) echo 392449 ;;
+        *) printf "unknown profile: %s\n" "$1" >&2; exit 1 ;;
+    esac
+}
+
+run_case() {
+    local engine="$1"
+    local workload="$2"
+    local profile="$3"
+    local t="$4"
+    local repeat="$5"
+
+    local key_size value_size prefill_keys run_path
+    key_size="$(profile_key "${profile}")"
+    value_size="$(profile_val "${profile}")"
+    prefill_keys="$(profile_prefill_tier_s "${profile}")"
+    run_path="$(mktemp -u -p "${db_root}" "${engine}_phase1_${workload}_${profile}_t${t}_r${repeat}_XXXXXX")"
+
+    printf "[phase1][%s] repeat=%s workload=%s profile=%s threads=%s path=%s\n" \
+      "${engine}" "${repeat}" "${workload}" "${profile}" "${t}" "${run_path}"
+
+    if [ "${engine}" = "mace" ]; then
+        "${root_dir}/target/release/kv_bench" \
+          --path "${run_path}" \
+          --workload "${workload}" \
+          --threads "${t}" \
+          --key-size "${key_size}" \
+          --value-size "${value_size}" \
+          --prefill-keys "${prefill_keys}" \
+          --warmup-secs "${warmup_secs}" \
+          --measure-secs "${measure_secs}" \
+          --shared-keyspace true \
+          --read-path "${read_path}" \
+          --result-file "${result_file}"
+    else
+        "${root_dir}/rocksdb/build/release/rocksdb_bench" \
+          --path "${run_path}" \
+          --workload "${workload}" \
+          --threads "${t}" \
+          --key-size "${key_size}" \
+          --value-size "${value_size}" \
+          --prefill-keys "${prefill_keys}" \
+          --warmup-secs "${warmup_secs}" \
+          --measure-secs "${measure_secs}" \
+          --read-path "${read_path}" \
+          --result-file "${result_file}"
+    fi
+}
+
+for repeat in $(seq 1 "${repeats}"); do
+    for workload in "${workloads[@]}"; do
+        for profile in "${profiles[@]}"; do
+            for t in "${threads[@]}"; do
+                run_case mace "${workload}" "${profile}" "${t}" "${repeat}"
+                run_case rocksdb "${workload}" "${profile}" "${t}" "${repeat}"
+            done
+        done
+    done
+done
+
+python3 "${script_dir}/phase1_eval.py" "${result_file}"
+printf "Phase 1 finished. Results: %s\n" "${result_file}"
diff --git a/scripts/phase1_eval.py b/scripts/phase1_eval.py
new file mode 100755
index 0000000..5158948
--- /dev/null
+++ b/scripts/phase1_eval.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+
+import sys
+import pandas as pd
+
+
+def cv(series: pd.Series) -> float:
+    mean = float(series.mean())
+    if mean == 0:
+        return 0.0
+    return float(series.std(ddof=1) / mean * 100.0)
+
+
+def main() -> int:
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} <result_csv>")
+        return 1
+
+    result_csv = sys.argv[1]
+    df = pd.read_csv(result_csv)
+
+    needed = {
+        "engine",
+        "workload_id",
+        "key_size",
+        "value_size",
+        "threads",
+        "ops_per_sec",
+        "p99_us",
+    }
+    missing = needed - set(df.columns)
+    if missing:
+        raise ValueError(f"Missing columns: {sorted(missing)}")
+
+    sub = df[df["workload_id"].isin(["W1", "W3", "W6"])].copy()
+    if sub.empty:
+        print("No phase1 rows found in csv")
+        return 0
+
+    grp_cols = ["engine", "workload_id", "key_size", "value_size", "threads"]
+    agg = (
+        sub.groupby(grp_cols)
+        .agg(
+            repeats=("ops_per_sec", "count"),
+            throughput_cv=("ops_per_sec", cv),
+            p99_cv=("p99_us", cv),
+            throughput_median=("ops_per_sec", "median"),
+            p99_median=("p99_us", "median"),
+        )
+        .reset_index()
+    )
+    agg["stable"] = (agg["throughput_cv"] <= 10.0) & (agg["p99_cv"] <= 15.0)
+
+    stable_ratio = float(agg["stable"].mean() * 100.0) if len(agg) > 0 else 0.0
+
+    with pd.option_context("display.max_rows", None, "display.max_columns", None):
+        print(agg.to_string(index=False))
+    print(f"\nStable cases: {stable_ratio:.1f}% ({agg['stable'].sum()}/{len(agg)})")
+
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())