diff --git a/run.sh b/run.sh
index 454d222..303d2df 100755
--- a/run.sh
+++ b/run.sh
@@ -1,5 +1,24 @@
 #$dirput: round app start_time start_type rss pss ratio pagefault itlbmiss dtlbmiss cpustalled
 
+cycle=3
+
+while getopts ":s:c" opt
+do
+	case $opt in
+		s)
+			export ANDROID_SERIAL=$OPTARG
+		;;
+		c)
+			cycle=$OPTARG
+		;;
+		?)
+			echo "unrecognized parameters" $opt
+			echo "usage: run.sh -s sid -c cycle"
+			exit 1
+		;;
+	esac
+done
+
 # 检查多个设备
 # 如果有多台设备需要先手动export ANDROID_SERIAL=xxx运作这个脚本
 nr_dev=$(adb devices | grep -v "List of devices" | grep device -c)
@@ -29,7 +48,7 @@ mkdir $dir/simpleperf
 
 echo "round app start_type start_time inc_ratio inc_total rss pss pagefaults itlbmiss dtlbmiss cpustall" > $dir/result
 
-for round in $(seq 1 3); do
+for round in $(seq 1 $cycle); do
 	for app in `cat applist`; do
 		sleep 3