perf: add RPC auth profiling diagnostics (#5775)

perf: add rpc auth profiling diagnostics

Co-authored-by: heihutu <heihutu@gmail.com>
Co-authored-by: zhi22915 <qiuzgang@gmail.com>

scripts/test_run_samply_attach_window.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+RUNNER="${SCRIPT_DIR}/run_samply_attach_window.sh"
+TMP_DIR="$(mktemp -d)"
+cleanup() {
+  if [[ -n "${TARGET_PID:-}" ]]; then
+    kill "$TARGET_PID" 2>/dev/null || true
+    wait "$TARGET_PID" 2>/dev/null || true
+  fi
+  rm -rf "$TMP_DIR"
+}
+trap cleanup EXIT
+
+mkdir -p "$TMP_DIR/bin"
+cat >"$TMP_DIR/bin/samply" <<'MOCK'
+#!/usr/bin/env bash
+set -euo pipefail
+out=""
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -o) out="$2"; shift 2 ;;
+    *) shift ;;
+  esac
+done
+[[ -n "$out" ]] || exit 2
+write_outputs() {
+  printf '{"profile":"ok"}\n' >"$out"
+  printf '{"symbols":"ok"}\n' >"${out%.gz}.syms.json"
+  exit 0
+}
+trap write_outputs INT TERM
+while true; do sleep 1; done
+MOCK
+chmod +x "$TMP_DIR/bin/samply"
+cat >"$TMP_DIR/bin/timeout" <<'MOCK'
+#!/usr/bin/env bash
+set -euo pipefail
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -s) shift 2 ;;
+    --kill-after=*) shift ;;
+    *) break ;;
+  esac
+done
+shift
+out=""
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -o) out="$2"; shift 2 ;;
+    *) shift ;;
+  esac
+done
+[[ -n "$out" ]] || exit 2
+printf '{"profile":"ok"}\n' >"$out"
+printf '{"symbols":"ok"}\n' >"${out%.gz}.syms.json"
+exit 124
+MOCK
+chmod +x "$TMP_DIR/bin/timeout"
+
+sleep 30 &
+TARGET_PID=$!
+
+OUTPUT="$TMP_DIR/profile.json.gz"
+PATH="$TMP_DIR/bin:$PATH" "$RUNNER" --pid "$TARGET_PID" --duration-secs 1 --output "$OUTPUT" --rate 99 >"$TMP_DIR/run.out"
+
+test -s "$OUTPUT"
+test -s "$TMP_DIR/profile.json.syms.json"
+grep -qx "profile=$OUTPUT" "$TMP_DIR/run.out"
+grep -qx "symbols=$TMP_DIR/profile.json.syms.json" "$TMP_DIR/run.out"