manifest decode & profile validate optimization

tests/benchmark/flamegraph_manifest_decode_profile.sh

@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Generates a flamegraph SVG for Manifest decode+profile validate.
+#
+# Prereqs:
+# - `perf` installed and usable by current user
+# - `cargo flamegraph` installed (`cargo install flamegraph`)
+#
+# Usage examples:
+#   BENCH_SAMPLE=large-02 ./tests/benchmark/flamegraph_manifest_decode_profile.sh
+#   BENCH_SAMPLE=large-02 BENCH_ITERS=5000 FLAMEGRAPH_PROFILE=dev ./tests/benchmark/flamegraph_manifest_decode_profile.sh
+#   BENCH_SAMPLE=large-02 BENCH_ITERS=2000 FLAMEGRAPH_PROFILE=release ./tests/benchmark/flamegraph_manifest_decode_profile.sh
+
+PROFILE="${FLAMEGRAPH_PROFILE:-dev}" # dev|release
+SAMPLE="${BENCH_SAMPLE:-large-02}"
+
+ITERS="${BENCH_ITERS:-2000}"
+FREQ="${FLAMEGRAPH_FREQ:-99}"
+WARMUP="${BENCH_WARMUP_ITERS:-1}"
+ROUNDS="${BENCH_ROUNDS:-1}"
+MIN_ROUND_MS="${BENCH_MIN_ROUND_MS:-1}"
+MAX_ITERS="${BENCH_MAX_ITERS:-100000}"
+
+if ! command -v perf >/dev/null 2>&1; then
+  echo "ERROR: perf not found. Install linux-tools/perf first (may require sudo)." >&2
+  exit 2
+fi
+
+if ! command -v cargo-flamegraph >/dev/null 2>&1 && ! command -v flamegraph >/dev/null 2>&1; then
+  # cargo installs as `cargo flamegraph`, but the binary is `cargo-flamegraph`.
+  if ! command -v cargo-flamegraph >/dev/null 2>&1; then
+    echo "ERROR: cargo-flamegraph not found. Install with: cargo install flamegraph" >&2
+    exit 2
+  fi
+fi
+
+OUT="target/bench/flamegraph_mft_decode_profile_${SAMPLE}_${PROFILE}.svg"
+
+echo "profile=${PROFILE} sample=${SAMPLE} iters=${ITERS} freq=${FREQ} out=${OUT}"
+
+FLAGS=()
+if [[ "${PROFILE}" == "release" ]]; then
+  FLAGS+=(--release)
+else
+  FLAGS+=(--dev)
+fi
+
+# On WSL2, /usr/bin/perf is often a wrapper that exits 2 because there is no
+# kernel-matched perf binary. In that case, prefer a real perf binary under
+# /usr/lib/linux-tools/*/perf by putting a shim earlier in PATH.
+PERF_WRAPPER_OK=1
+PERF_VERSION_OUT="$(perf --version 2>&1 || true)"
+if echo "${PERF_VERSION_OUT}" | grep -q "WARNING: perf not found for kernel"; then
+  PERF_WRAPPER_OK=0
+fi
+
+if [[ "${PERF_WRAPPER_OK}" == "0" ]]; then
+  PERF_REAL="$(ls -1 /usr/lib/linux-tools/*/perf 2>/dev/null | head -n 1 || true)"
+  if [[ -z "${PERF_REAL}" ]]; then
+    echo "ERROR: perf wrapper found, but no real perf binary under /usr/lib/linux-tools/*/perf" >&2
+    exit 2
+  fi
+
+  SHIM_DIR="target/bench/tools"
+  mkdir -p "${SHIM_DIR}"
+  cat > "${SHIM_DIR}/perf" <<EOF
+#!/usr/bin/env bash
+exec "${PERF_REAL}" "\$@"
+EOF
+  chmod +x "${SHIM_DIR}/perf"
+  export PATH="$(pwd)/${SHIM_DIR}:${PATH}"
+  echo "Using perf shim -> ${PERF_REAL}"
+fi
+
+BENCH_SAMPLE="${SAMPLE}" \
+BENCH_ITERS="${ITERS}" \
+BENCH_WARMUP_ITERS="${WARMUP}" \
+BENCH_ROUNDS="${ROUNDS}" \
+BENCH_MIN_ROUND_MS="${MIN_ROUND_MS}" \
+BENCH_MAX_ITERS="${MAX_ITERS}" \
+cargo flamegraph "${FLAGS[@]}" \
+  -F "${FREQ}" \
+  --output "${OUT}" \
+  --test bench_manifest_decode_profile -- --ignored --nocapture
+
+echo "Wrote ${OUT}"

tests/benchmark/selected_der/sources.tsv

@@ -0,0 +1,9 @@
+name	input_path	der_path	input_size	der_size	source_format
+large-01	benchmark/fixtures/selected/large-01.mft	benchmark/fixtures/selected_der/large-01.mft	262869	2250	stored_point_container
+large-02	benchmark/fixtures/selected/large-02.mft	benchmark/fixtures/selected_der/large-02.mft	264331	10476	stored_point_container
+medium-01	benchmark/fixtures/selected/medium-01.mft	benchmark/fixtures/selected_der/medium-01.mft	16384	2681	stored_point_container
+medium-02	benchmark/fixtures/selected/medium-02.mft	benchmark/fixtures/selected_der/medium-02.mft	16384	2681	stored_point_container
+small-01	benchmark/fixtures/selected/small-01.mft	benchmark/fixtures/selected_der/small-01.mft	3160	1875	stored_point_container
+small-02	benchmark/fixtures/selected/small-02.mft	benchmark/fixtures/selected_der/small-02.mft	3160	1875	stored_point_container
+xlarge-01	benchmark/fixtures/selected/xlarge-01.mft	benchmark/fixtures/selected_der/xlarge-01.mft	4522145	144968	stored_point_container
+xlarge-02	benchmark/fixtures/selected/xlarge-02.mft	benchmark/fixtures/selected_der/xlarge-02.mft	4615094	150261	stored_point_container