diff --git a/mod_for_factory_scripts/400configAutotest b/mod_for_factory_scripts/400configAutotest
new file mode 100644
index 0000000000..74261a5512
--- /dev/null
+++ b/mod_for_factory_scripts/400configAutotest
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+echo "Configure autotest setting."
+
+GLOBAL_CONFIG="${ROOT_FS_DIR}/usr/local/autotest/global_config.ini"
+
+if [ -f "${GLOBAL_CONFIG}" ]; then
+  echo -e "File ${GLOBAL_CONFIG} already exists."
+  exit 1
+fi
+
+cat >"${GLOBAL_CONFIG}" <<EOF
+[CLIENT]
+drop_caches: False
+drop_caches_between_iterations: False
+EOF