diff --git a/agent/agent.go b/agent/agent.go
index 228b28f9..8c1f9f13 100644
--- a/agent/agent.go
+++ b/agent/agent.go
@@ -586,19 +586,6 @@ func (t *transporterServer) Transfer(ctx context.Context, r *Request) (*Response
 					if !strings.HasPrefix(filepath.Base(t.req.DatabaseLogPath), t.req.LogPrefix) {
 						dstDatabaseLogPath = fmt.Sprintf("%s-%d-%s", t.req.LogPrefix, t.req.ServerIndex+1, filepath.Base(t.req.DatabaseLogPath))
 					}
-
-					srcMonitorResultPath := t.req.MonitorResultPath
-					dstMonitorResultPath := filepath.Base(t.req.MonitorResultPath)
-					if !strings.HasPrefix(filepath.Base(t.req.MonitorResultPath), t.req.LogPrefix) {
-						dstMonitorResultPath = fmt.Sprintf("%s-%d-%s", t.req.LogPrefix, t.req.ServerIndex+1, filepath.Base(t.req.MonitorResultPath))
-					}
-
-					srcAgentLogPath := agentLogPath
-					dstAgentLogPath := filepath.Base(agentLogPath)
-					if !strings.HasPrefix(filepath.Base(agentLogPath), t.req.LogPrefix) {
-						dstAgentLogPath = fmt.Sprintf("%s-%d-%s", t.req.LogPrefix, t.req.ServerIndex+1, filepath.Base(agentLogPath))
-					}
-
 					log.Printf("Uploading %s to %s", srcDatabaseLogPath, dstDatabaseLogPath)
 					var uerr error
 					for k := 0; k < 5; k++ {
@@ -610,6 +597,11 @@ func (t *transporterServer) Transfer(ctx context.Context, r *Request) (*Response
 						}
 					}
 
+					srcMonitorResultPath := t.req.MonitorResultPath
+					dstMonitorResultPath := filepath.Base(t.req.MonitorResultPath)
+					if !strings.HasPrefix(filepath.Base(t.req.MonitorResultPath), t.req.LogPrefix) {
+						dstMonitorResultPath = fmt.Sprintf("%s-%d-%s", t.req.LogPrefix, t.req.ServerIndex+1, filepath.Base(t.req.MonitorResultPath))
+					}
 					log.Printf("Uploading %s to %s", srcMonitorResultPath, dstMonitorResultPath)
 					for k := 0; k < 5; k++ {
 						if uerr = u.UploadFile(t.req.GoogleCloudStorageBucketName, srcMonitorResultPath, dstMonitorResultPath); uerr != nil {
@@ -620,6 +612,11 @@ func (t *transporterServer) Transfer(ctx context.Context, r *Request) (*Response
 						}
 					}
 
+					srcAgentLogPath := agentLogPath
+					dstAgentLogPath := filepath.Base(agentLogPath)
+					if !strings.HasPrefix(filepath.Base(agentLogPath), t.req.LogPrefix) {
+						dstAgentLogPath = fmt.Sprintf("%s-%d-%s", t.req.LogPrefix, t.req.ServerIndex+1, filepath.Base(agentLogPath))
+					}
 					log.Printf("Uploading %s to %s", srcAgentLogPath, dstAgentLogPath)
 					for k := 0; k < 5; k++ {
 						if uerr = u.UploadFile(t.req.GoogleCloudStorageBucketName, srcAgentLogPath, dstAgentLogPath); uerr != nil {
diff --git a/bench/main.go b/bench/bench.go
similarity index 76%
rename from bench/main.go
rename to bench/bench.go
index fc4b7da2..5f4e6470 100644
--- a/bench/main.go
+++ b/bench/bench.go
@@ -12,8 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// bench does benchmark, mostly copied from https://github.com/coreos/etcd/tree/master/tools/benchmark.
-package main
+// Package bench is modified based on https://github.com/coreos/etcd/tree/master/tools/benchmark.
+package bench
 
 import (
 	"fmt"
@@ -40,7 +40,10 @@ var (
 	sample       bool
 	noHistogram  bool
 
-	csvResultPath string
+	csvResultPath                 string
+	googleCloudProjectName        string
+	googleCloudStorageJSONKeyPath string
+	googleCloudStorageBucketName  string
 
 	bar     *pb.ProgressBar
 	results chan result
@@ -60,6 +63,9 @@ func init() {
 	Command.PersistentFlags().BoolVar(&noHistogram, "no-histogram", false, "'true' to not show results in histogram.")
 
 	Command.PersistentFlags().StringVar(&csvResultPath, "csv-result-path", "timeseries.csv", "path to store csv results.")
+	Command.PersistentFlags().StringVar(&googleCloudProjectName, "google-cloud-project-name", "", "Google cloud project name.")
+	Command.PersistentFlags().StringVar(&googleCloudStorageJSONKeyPath, "google-cloud-storage-json-key-path", "", "Path of JSON key file.")
+	Command.PersistentFlags().StringVar(&googleCloudStorageBucketName, "google-cloud-storage-bucket-name", "", "Google cloud storage bucket name.")
 }
 
 func main() {
diff --git a/bench/put.go b/bench/put.go
index 9215f199..52214c50 100644
--- a/bench/put.go
+++ b/bench/put.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package bench
 
 import (
 	"encoding/binary"
diff --git a/bench/range.go b/bench/range.go
index 263f692d..91a6a3a8 100644
--- a/bench/range.go
+++ b/bench/range.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package bench
 
 import (
 	"fmt"
diff --git a/bench/report.go b/bench/report.go
index 049acada..a81faf87 100644
--- a/bench/report.go
+++ b/bench/report.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package bench
 
 import (
 	"fmt"
diff --git a/bench/timeseries.go b/bench/timeseries.go
index 8fcd382e..08c8e84a 100644
--- a/bench/timeseries.go
+++ b/bench/timeseries.go
@@ -12,16 +12,20 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package bench
 
 import (
 	"bytes"
 	"encoding/csv"
 	"fmt"
+	"io/ioutil"
 	"log"
+	"path/filepath"
 	"sort"
 	"sync"
 	"time"
+
+	"github.com/coreos/dbtester/remotestorage"
 )
 
 type timeSeries struct {
@@ -112,7 +116,29 @@ func (ts TimeSeries) String() string {
 	if err := toFile(txt, csvResultPath); err != nil {
 		log.Fatal(err)
 	} else {
-		log.Println("time series saved... Please upload to Google cloud storage...")
+		log.Println("time series saved... Uploading to Google cloud storage...")
+		kbts, err := ioutil.ReadFile(googleCloudStorageJSONKeyPath)
+		if err != nil {
+			log.Fatal(err)
+		}
+		u, err := remotestorage.NewGoogleCloudStorage(kbts, googleCloudProjectName)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		// set up file names
+		srcCSVResultPath := csvResultPath
+		dstCSVResultPath := filepath.Base(csvResultPath)
+		log.Printf("Uploading %s to %s", srcCSVResultPath, dstCSVResultPath)
+		var uerr error
+		for k := 0; k < 5; k++ {
+			if uerr = u.UploadFile(googleCloudStorageBucketName, srcCSVResultPath, dstCSVResultPath); uerr != nil {
+				log.Println(uerr)
+				continue
+			} else {
+				break
+			}
+		}
 	}
 	return fmt.Sprintf("\nSample in one second (unix latency throughput):\n%s", txt)
 }
diff --git a/bench/util.go b/bench/util.go
index 3109b0e1..81d74584 100644
--- a/bench/util.go
+++ b/bench/util.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package main
+package bench
 
 import (
 	"crypto/rand"
diff --git a/main.go b/main.go
index 2d0146d3..327510cd 100644
--- a/main.go
+++ b/main.go
@@ -19,12 +19,13 @@
 //
 //	Available Commands:
 //	  agent       Database agent in remote servers.
+//	  bench       Low-level benchmark tool for etcd, Zookeeper, etcd2, consul.
 //	  start       Starts database through RPC calls.
 //	  stop        Stops database through RPC calls.
 //	  restart     Restarts database through RPC calls.
 //
 //	Flags:
-//	  -h, --help[=false]: help for dbtester
+//	  -h, --help   help for dbtester
 //
 //	Use "dbtester [command] --help" for more information about a command.
 //
@@ -35,6 +36,7 @@ import (
 	"os"
 
 	"github.com/coreos/dbtester/agent"
+	"github.com/coreos/dbtester/bench"
 	"github.com/coreos/dbtester/control"
 
 	"github.com/spf13/cobra"
@@ -54,6 +56,7 @@ func init() {
 
 func init() {
 	rootCommand.AddCommand(agent.Command)
+	rootCommand.AddCommand(bench.Command)
 	rootCommand.AddCommand(control.StartCommand)
 	rootCommand.AddCommand(control.StopCommand)
 	rootCommand.AddCommand(control.RestartCommand)