diff --git a/rootfs/etc/init.d/lynq-fota-backup.sh b/rootfs/etc/init.d/lynq-fota-backup.sh
index 53eb20f..8013112 100755
--- a/rootfs/etc/init.d/lynq-fota-backup.sh
+++ b/rootfs/etc/init.d/lynq-fota-backup.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Run the daemon
+# Run the daemon with CPU cgroup limitation
 #
 
 DAEMON="lynq-fota-backup-service"
@@ -8,11 +8,52 @@
 EXEC="/usr/bin/lynq-fota-backup"
 EXEC_ARGS=""
 
+# Cgroup配置
+CGROUP_NAME="fota_backup"
+CGROUP_PATH="/sys/fs/cgroup/cpu/$CGROUP_NAME"
+CPU_LIMIT="20000"  # 20% CPU (100000 = 100%)
+
+# 创建Cgroup并设置CPU限制
+setup_cgroup() {
+	if [ ! -d "$CGROUP_PATH" ]; then
+		mkdir -p "$CGROUP_PATH"
+		echo "$CPU_LIMIT" > "$CGROUP_PATH/cpu.cfs_quota_us"
+		echo "100000" > "$CGROUP_PATH/cpu.cfs_period_us"
+		echo "Cgroup $CGROUP_NAME created with 20% CPU limit"
+	else
+		echo "Cgroup $CGROUP_NAME already exists, updating limit"
+		echo "$CPU_LIMIT" > "$CGROUP_PATH/cpu.cfs_quota_us"
+	fi
+}
+
+# 将进程添加到Cgroup
+add_to_cgroup() {
+	PID=$1
+	if [ -d "$CGROUP_PATH" ]; then
+		echo "$PID" > "$CGROUP_PATH/tasks"
+		echo -n "Process $PID added to Cgroup $CGROUP_NAME"
+	else
+		echo -n "ERROR: Cgroup $CGROUP_PATH does not exist!"
+	fi
+}
 
 start() {
-        echo -n "Starting $DAEMON... "
-        start-stop-daemon --no-close -S -b -m -p $PIDFILE -x $EXEC -- $EXEC_ARGS
-        [ $? -eq 0 ] && echo "OK" || echo "ERROR"
+	sleep 600
+	echo "Starting $DAEMON with 20% CPU limit... "
+	setup_cgroup
+	start-stop-daemon --no-close -S -b -m -p $PIDFILE -x $EXEC -- $EXEC_ARGS
+	RETVAL=$?
+	if [ $RETVAL -eq 0 ]; then
+		PID=$(cat $PIDFILE 2>/dev/null)
+		if [ -n "$PID" ]; then
+			add_to_cgroup "$PID"
+		else
+			echo "WARNING: Failed to read PID from $PIDFILE"
+		fi
+			echo "OK"
+		else
+			echo "ERROR"
+	fi
 }
 
 stop() {
@@ -22,18 +63,22 @@
 }
 
 restart() {
-        stop
-        start
+        stop 
+        start &
 }
 
 case "$1" in
-  start|stop|restart)
+	start)
+	start &
+	;;
+	stop|restart)
         "$1"
         ;;
-  *)
+	*)
         echo "Usage: $0 {start|stop|restart}"
         exit 1
 esac
 
 exit $?
 
+