diff --git a/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh b/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh
index be8038870a07755a91e98690fc26d1ca341d1c89..eb1c420a42b569ec8aef31048c27a483abe057c9 100644
--- a/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh
+++ b/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh
@@ -29,6 +29,11 @@ monitor() {
         sudo rpm -qa |grep -w "^perf"
 	if [ $? -ne 0 ]; then
 		yum install -y perf
+		sudo rpm -qa |grep -w "^perf"
+		if [ $? -ne 0 ]; then
+			sudo echo "can not install perf"
+			exit -1
+		fi
 	fi
 
 	pid=`sudo ps aux  |grep qemu |grep $domain | awk '{print $2}'`