diff --git a/benchmark/benchmark.go b/benchmark/benchmark.go
index be294734..83d5f5bd 100644
--- a/benchmark/benchmark.go
+++ b/benchmark/benchmark.go
@@ -37,15 +37,14 @@ Package benchmark implements the building blocks to setup end-to-end gRPC benchm
 package benchmark
 
 import (
-	"golang.org/x/net/context"
 	"io"
 	"math"
 	"net"
-	
+
+	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 	testpb "google.golang.org/grpc/benchmark/grpc_testing"
 	"google.golang.org/grpc/grpclog"
-
 )
 
 func newPayload(t testpb.PayloadType, size int) *testpb.Payload {
@@ -121,8 +120,8 @@ func DoUnaryCall(tc testpb.TestServiceClient, reqSize, respSize int) {
 	}
 }
 
-// DoStreamingcall performs a streaming RPC with given stub and request and response size.client side
-func DoStreamingCall(stream testpb.TestService_StreamingCallClient, tc testpb.TestServiceClient, reqSize, respSize int) {
+// DoStreamingRoundTrip performs a round trip  for a single streaming rpc.
+func DoStreamingRoundTrip(tc testpb.TestServiceClient, stream testpb.TestService_StreamingCallClient, reqSize, respSize int) {
 	pl := newPayload(testpb.PayloadType_COMPRESSABLE, reqSize)
 	req := &testpb.SimpleRequest{
 		ResponseType: pl.Type,
@@ -130,10 +129,10 @@ func DoStreamingCall(stream testpb.TestService_StreamingCallClient, tc testpb.Te
 		Payload:      pl,
 	}
 	if err := stream.Send(req); err != nil {
-		grpclog.Fatalf("%v.StreamingCall()= %v ", tc, err)
+		grpclog.Fatalf("%v.StreamingCall(_)=_, %v: ", tc, err)
 	}
 	if _, err := stream.Recv(); err != nil {
-		grpclog.Fatal("%v.StreamingCall()= %v", tc, err)
+		grpclog.Fatal("%v.StreamingCall(_)=_, %v: ", tc, err)
 	}
 }
 
diff --git a/benchmark/benchmark_test.go b/benchmark/benchmark_test.go
index 696ce524..76e99688 100644
--- a/benchmark/benchmark_test.go
+++ b/benchmark/benchmark_test.go
@@ -64,11 +64,11 @@ func runStream(b *testing.B, maxConcurrentCalls int) {
 	tc := testpb.NewTestServiceClient(conn)
 	stream, err := tc.StreamingCall(context.Background())
 	if err != nil {
-		grpclog.Fatalf("%v.StreamingCall()=%v", tc, err)
+		grpclog.Fatalf("%v.StreamingCall(_)=_,%v: ", tc, err)
 	}
 	// Warm up connection.
 	for i := 0; i < 10; i++ {
-		streamCaller(stream, tc)
+		streamCaller(tc, stream)
 	}
 
 	ch := make(chan int, maxConcurrentCalls*4)
@@ -83,7 +83,7 @@ func runStream(b *testing.B, maxConcurrentCalls int) {
 		go func() {
 			for _ = range ch {
 				start := time.Now()
-				streamCaller(stream, tc)
+				streamCaller(tc, stream)
 				elapse := time.Since(start)
 				mu.Lock()
 				s.Add(elapse)
@@ -105,8 +105,8 @@ func unaryCaller(client testpb.TestServiceClient) {
 	DoUnaryCall(client, 1, 1)
 }
 
-func streamCaller(stream testpb.TestService_StreamingCallClient, client testpb.TestServiceClient) {
-	DoStreamingCall(stream, client, 1, 1)
+func streamCaller(client testpb.TestServiceClient, stream testpb.TestService_StreamingCallClient) {
+	DoStreamingRoundTrip(client, stream, 1, 1)
 }
 
 func BenchmarkClientStreamc1(b *testing.B) {
diff --git a/benchmark/client/main.go b/benchmark/client/main.go
index 44e0fbd5..fdb32233 100644
--- a/benchmark/client/main.go
+++ b/benchmark/client/main.go
@@ -28,8 +28,8 @@ func unaryCaller(client testpb.TestServiceClient) {
 	benchmark.DoUnaryCall(client, 1, 1)
 }
 
-func streamCaller(stream testpb.TestService_StreamingCallClient, client testpb.TestServiceClient) {
-	benchmark.DoStreamingCall(stream, client, 1, 1)
+func streamCaller(client testpb.TestServiceClient, stream testpb.TestService_StreamingCallClient) {
+	benchmark.DoStreamingRoundTrip(client, stream, 1, 1)
 }
 
 func buildConnection() (s *stats.Stats, conn *grpc.ClientConn, tc testpb.TestServiceClient) {
@@ -91,10 +91,10 @@ func closeLoopStream() {
 	s, conn, tc := buildConnection()
 	stream, err := tc.StreamingCall(context.Background())
 	if err != nil {
-		grpclog.Fatalf("%v.StreamingCall()=%v", tc, err)
+		grpclog.Fatalf("%v.StreamingCall(_)=_,%v: ", tc, err)
 	}
 	for i := 0; i < 100; i++ {
-		streamCaller(stream, tc)
+		streamCaller(tc, stream)
 	}
 	ch := make(chan int, *maxConcurrentRPCs*4)
 	var (
@@ -107,7 +107,7 @@ func closeLoopStream() {
 		go func() {
 			for _ = range ch {
 				start := time.Now()
-				streamCaller(stream, tc)
+				streamCaller(tc, stream)
 				elapse := time.Since(start)
 				mu.Lock()
 				s.Add(elapse)