diff --git a/helper/bench/Makefile b/helper/bench/Makefile
index e819a4b..72c8094 100644
--- a/helper/bench/Makefile
+++ b/helper/bench/Makefile
@@ -1,6 +1,7 @@
 # All targets.
 default: bench
 
+# configure these paths according to you system
 bench: /usr/local/bin/go /etc/redis/redis.conf /usr/local/bin/docker-compose main.go
 	rm -f ../conf.sample.yml
 	go build -o bench
diff --git a/helper/bench/prepare.sh b/helper/bench/prepare.sh
index 2ec3ad1..bde6b63 100755
--- a/helper/bench/prepare.sh
+++ b/helper/bench/prepare.sh
@@ -6,5 +6,5 @@ git clone https://github.com/dtm-labs/dtm.git && cd dtm && git checkout alpha &&
 
 echo 'all prepared. you shoud run following commands to test in different terminal'
 echo
-echo 'cd dtm && go run bench/main.go redis|boltdb|db'
-echo 'cd dtm && bench/run-redis|boltdb|mysql.sh'
+echo 'cd dtf && go run helper/bench/main.go redis|boltdb|db'
+echo 'cd dtf/helper && bench/run-redis|boltdb|mysql.sh'
diff --git a/helper/bench/svr/http.go b/helper/bench/svr/http.go
index 76844d6..ef5c057 100644
--- a/helper/bench/svr/http.go
+++ b/helper/bench/svr/http.go
@@ -96,7 +96,7 @@ func PrepareBenchDB() {
 func StartSvr() {
 	app := dtmutil.GetGinApp()
 	benchAddRoute(app)
-	logger.Debugf("bench listening at %d", benchPort)
+	logger.Infof("bench listening at %s", benchPort)
 	go func() {
 		_ = app.Run(fmt.Sprintf(":%s", benchPort))
 	}()