diff --git a/init/update-engine.conf b/init/update-engine.conf
new file mode 100644
index 0000000..35bfc06
--- /dev/null
+++ b/init/update-engine.conf
@@ -0,0 +1,27 @@
+# Copyright (c) 2012 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.
+
+description     "System software update service"
+author          "chromium-os-dev@chromium.org"
+
+# N.B. The chromeos-factoryinstall ebuild edits the 'start on' line so as
+# to disable update_engine in factory images.  Do not change this without
+# also updating that reference.
+start on starting system-services
+stop on stopping system-services
+respawn
+
+expect fork
+
+# Runs the daemon at low/idle IO priority so that updates don't
+# impact system responsiveness.
+exec ionice -c3 update_engine
+
+# Put update_engine process in its own cgroup.
+# Default cpu.shares is 1024.
+post-start script
+  cgroup_dir="/sys/fs/cgroup/cpu/${UPSTART_JOB}"
+  mkdir -p "${cgroup_dir}"
+  echo $(status | cut -f 4 -d ' ') > "${cgroup_dir}/tasks"
+end script