diff --git a/Makefile b/Makefile
index e9fceab..03bb01f 100644
--- a/Makefile
+++ b/Makefile
@@ -9,9 +9,6 @@
 testdeps:
 	go get -d -v -t google.golang.org/grpc/...
 
-benchdeps: testdeps
-	go get -d -v golang.org/x/perf/cmd/benchstat
-
 updatetestdeps:
 	go get -d -v -t -u -f google.golang.org/grpc/...
 
@@ -35,9 +32,6 @@
 testrace: testdeps
 	go test -v -race -cpu 1,4 google.golang.org/grpc/...
 
-benchmark: benchdeps
-	go test google.golang.org/grpc/benchmark/... -benchmem -bench=. | tee /tmp/tmp.result && benchstat /tmp/tmp.result && rm /tmp/tmp.result
-
 clean:
 	go clean -i google.golang.org/grpc/...
 
@@ -55,6 +49,4 @@
 	test \
 	testrace \
 	clean \
-	coverage \
-	benchdeps \
-	benchmark
+	coverage
diff --git a/benchmark/benchmark.go b/benchmark/benchmark.go
index 7afd49a..df47f69 100644
--- a/benchmark/benchmark.go
+++ b/benchmark/benchmark.go
@@ -32,6 +32,7 @@
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 	testpb "google.golang.org/grpc/benchmark/grpc_testing"
+	"google.golang.org/grpc/benchmark/latency"
 	"google.golang.org/grpc/benchmark/stats"
 	"google.golang.org/grpc/grpclog"
 )
@@ -133,6 +134,9 @@
 	// For "protobuf", it's ignored.
 	// For "bytebuf", it should be an int representing response size.
 	Metadata interface{}
+
+	// Network can simulate latency
+	Network *latency.Network
 }
 
 // StartServer starts a gRPC server serving a benchmark service according to info.
@@ -142,6 +146,10 @@
 	if err != nil {
 		grpclog.Fatalf("Failed to listen: %v", err)
 	}
+	nw := info.Network
+	if nw != nil {
+		lis = nw.Listener(lis)
+	}
 	s := grpc.NewServer(opts...)
 	switch info.Type {
 	case "protobuf":
@@ -222,12 +230,18 @@
 	return conn
 }
 
-func runUnary(b *testing.B, maxConcurrentCalls, reqSize, respSize int) {
+func runUnary(b *testing.B, maxConcurrentCalls, reqSize, respSize, kbps, mtu int, ltc time.Duration) {
 	s := stats.AddStats(b, 38)
+	nw := &latency.Network{Kbps: kbps, Latency: ltc, MTU: mtu}
 	b.StopTimer()
-	target, stopper := StartServer(ServerInfo{Addr: "localhost:0", Type: "protobuf"}, grpc.MaxConcurrentStreams(uint32(maxConcurrentCalls+1)))
+	target, stopper := StartServer(ServerInfo{Addr: "localhost:0", Type: "protobuf", Network: nw}, grpc.MaxConcurrentStreams(uint32(maxConcurrentCalls+1)))
 	defer stopper()
-	conn := NewClientConn(target, grpc.WithInsecure())
+	conn := NewClientConn(
+		target, grpc.WithInsecure(),
+		grpc.WithDialer(func(address string, timeout time.Duration) (net.Conn, error) {
+			return nw.TimeoutDialer(net.DialTimeout)("tcp", address, timeout)
+		}),
+	)
 	tc := testpb.NewBenchmarkServiceClient(conn)
 
 	// Warm up connection.
@@ -265,12 +279,18 @@
 	conn.Close()
 }
 
-func runStream(b *testing.B, maxConcurrentCalls, reqSize, respSize int) {
+func runStream(b *testing.B, maxConcurrentCalls, reqSize, respSize, kbps, mtu int, ltc time.Duration) {
 	s := stats.AddStats(b, 38)
+	nw := &latency.Network{Kbps: kbps, Latency: ltc, MTU: mtu}
 	b.StopTimer()
-	target, stopper := StartServer(ServerInfo{Addr: "localhost:0", Type: "protobuf"}, grpc.MaxConcurrentStreams(uint32(maxConcurrentCalls+1)))
+	target, stopper := StartServer(ServerInfo{Addr: "localhost:0", Type: "protobuf", Network: nw}, grpc.MaxConcurrentStreams(uint32(maxConcurrentCalls+1)))
 	defer stopper()
-	conn := NewClientConn(target, grpc.WithInsecure())
+	conn := NewClientConn(
+		target, grpc.WithInsecure(),
+		grpc.WithDialer(func(address string, timeout time.Duration) (net.Conn, error) {
+			return nw.TimeoutDialer(net.DialTimeout)("tcp", address, timeout)
+		}),
+	)
 	tc := testpb.NewBenchmarkServiceClient(conn)
 
 	// Warm up connection.
diff --git a/benchmark/benchmark16_test.go b/benchmark/benchmark16_test.go
index fcbcb15..bff52c6 100644
--- a/benchmark/benchmark16_test.go
+++ b/benchmark/benchmark16_test.go
@@ -30,80 +30,80 @@
 
 func BenchmarkClientStreamc1(b *testing.B) {
 	grpc.EnableTracing = true
-	runStream(b, 1, 1, 1)
+	runStream(b, 1, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamc8(b *testing.B) {
 	grpc.EnableTracing = true
-	runStream(b, 8, 1, 1)
+	runStream(b, 8, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamc64(b *testing.B) {
 	grpc.EnableTracing = true
-	runStream(b, 64, 1, 1)
+	runStream(b, 64, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamc512(b *testing.B) {
 	grpc.EnableTracing = true
-	runStream(b, 512, 1, 1)
+	runStream(b, 512, 1, 1, 0, 0, 0)
 }
 func BenchmarkClientUnaryc1(b *testing.B) {
 	grpc.EnableTracing = true
-	runUnary(b, 1, 1, 1)
+	runUnary(b, 1, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientUnaryc8(b *testing.B) {
 	grpc.EnableTracing = true
-	runUnary(b, 8, 1, 1)
+	runUnary(b, 8, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientUnaryc64(b *testing.B) {
 	grpc.EnableTracing = true
-	runUnary(b, 64, 1, 1)
+	runUnary(b, 64, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientUnaryc512(b *testing.B) {
 	grpc.EnableTracing = true
-	runUnary(b, 512, 1, 1)
+	runUnary(b, 512, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamNoTracec1(b *testing.B) {
 	grpc.EnableTracing = false
-	runStream(b, 1, 1, 1)
+	runStream(b, 1, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamNoTracec8(b *testing.B) {
 	grpc.EnableTracing = false
-	runStream(b, 8, 1, 1)
+	runStream(b, 8, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamNoTracec64(b *testing.B) {
 	grpc.EnableTracing = false
-	runStream(b, 64, 1, 1)
+	runStream(b, 64, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientStreamNoTracec512(b *testing.B) {
 	grpc.EnableTracing = false
-	runStream(b, 512, 1, 1)
+	runStream(b, 512, 1, 1, 0, 0, 0)
 }
 func BenchmarkClientUnaryNoTracec1(b *testing.B) {
 	grpc.EnableTracing = false
-	runUnary(b, 1, 1, 1)
+	runUnary(b, 1, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientUnaryNoTracec8(b *testing.B) {
 	grpc.EnableTracing = false
-	runUnary(b, 8, 1, 1)
+	runUnary(b, 8, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientUnaryNoTracec64(b *testing.B) {
 	grpc.EnableTracing = false
-	runUnary(b, 64, 1, 1)
+	runUnary(b, 64, 1, 1, 0, 0, 0)
 }
 
 func BenchmarkClientUnaryNoTracec512(b *testing.B) {
 	grpc.EnableTracing = false
-	runUnary(b, 512, 1, 1)
+	runUnary(b, 512, 1, 1, 0, 0, 0)
 }
 
 func TestMain(m *testing.M) {
diff --git a/benchmark/benchmark17_test.go b/benchmark/benchmark17_test.go
index f6353d4..cb6231a 100644
--- a/benchmark/benchmark17_test.go
+++ b/benchmark/benchmark17_test.go
@@ -24,6 +24,7 @@
 	"fmt"
 	"os"
 	"testing"
+	"time"
 
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/benchmark/stats"
@@ -31,25 +32,39 @@
 
 func BenchmarkClient(b *testing.B) {
 	maxConcurrentCalls := []int{1, 8, 64, 512}
-	reqSizeBytes := []int{1, 1024}
-	reqspSizeBytes := []int{1, 1024}
+	reqSizeBytes := []int{1, 1024, 1024 * 1024}
+	reqspSizeBytes := []int{1, 1024, 1024 * 1024}
+	kbps := []int{0, 10240} // if non-positive, infinite
+	MTU := []int{0, 10}     // if non-positive, infinite
+	// When set the latency to 0 (no delay), the result is slower than the real result with no delay
+	// because latency simulation section has extra operations
+	latency := []time.Duration{0, 40 * time.Millisecond} // if non-positive, no delay.
+
 	for _, enableTracing := range []bool{true, false} {
 		grpc.EnableTracing = enableTracing
 		tracing := "Tracing"
 		if !enableTracing {
 			tracing = "noTrace"
 		}
-		for _, maxC := range maxConcurrentCalls {
-			for _, reqS := range reqSizeBytes {
-				for _, respS := range reqspSizeBytes {
-					b.Run(fmt.Sprintf("Unary-%s-maxConcurrentCalls_"+
-						"%#v-reqSize_%#vB-respSize_%#vB", tracing, maxC, reqS, respS), func(b *testing.B) {
-						runUnary(b, maxC, reqS, respS)
-					})
-					b.Run(fmt.Sprintf("Stream-%s-maxConcurrentCalls_"+
-						"%#v-reqSize_%#vB-respSize_%#vB", tracing, maxC, reqS, respS), func(b *testing.B) {
-						runStream(b, maxC, reqS, respS)
-					})
+		for _, ltc := range latency {
+			for _, k := range kbps {
+				for _, mtu := range MTU {
+					for _, maxC := range maxConcurrentCalls {
+						for _, reqS := range reqSizeBytes {
+							for _, respS := range reqspSizeBytes {
+								b.Run(fmt.Sprintf("Unary-%s-kbps_%#v-MTU_%#v-maxConcurrentCalls_"+
+									"%#v-reqSize_%#vB-respSize_%#vB-latency_%s",
+									tracing, k, mtu, maxC, reqS, respS, ltc.String()), func(b *testing.B) {
+									runUnary(b, maxC, reqS, respS, k, mtu, ltc)
+								})
+								b.Run(fmt.Sprintf("Stream-%s-kbps_%#v-MTU_%#v-maxConcurrentCalls_"+
+									"%#v-reqSize_%#vB-respSize_%#vB-latency_%s",
+									tracing, k, mtu, maxC, reqS, respS, ltc.String()), func(b *testing.B) {
+									runStream(b, maxC, reqS, respS, k, mtu, ltc)
+								})
+							}
+						}
+					}
 				}
 			}
 		}
diff --git a/benchmark/stats/histogram.go b/benchmark/stats/histogram.go
index f2fdf23..f038d26 100644
--- a/benchmark/stats/histogram.go
+++ b/benchmark/stats/histogram.go
@@ -104,8 +104,14 @@
 
 // Print writes textual output of the histogram values.
 func (h *Histogram) Print(w io.Writer) {
+	h.PrintWithUnit(w, 1)
+}
+
+// PrintWithUnit writes textual output of the histogram values	.
+// Data in histogram is divided by a Unit before print.
+func (h *Histogram) PrintWithUnit(w io.Writer, unit float64) {
 	avg := float64(h.Sum) / float64(h.Count)
-	fmt.Fprintf(w, "Count: %d  Min: %d  Max: %d  Avg: %.2f\n", h.Count, h.Min, h.Max, avg)
+	fmt.Fprintf(w, "Count: %d  Min: %5.1f  Max: %5.1f  Avg: %.2f\n", h.Count, float64(h.Min)/unit, float64(h.Max)/unit, avg/unit)
 	fmt.Fprintf(w, "%s\n", strings.Repeat("-", 60))
 	if h.Count <= 0 {
 		return
@@ -121,9 +127,9 @@
 
 	accCount := int64(0)
 	for i, b := range h.Buckets {
-		fmt.Fprintf(w, "[%*f, ", maxBucketDigitLen, b.LowBound)
+		fmt.Fprintf(w, "[%*f, ", maxBucketDigitLen, b.LowBound/unit)
 		if i+1 < len(h.Buckets) {
-			fmt.Fprintf(w, "%*f)", maxBucketDigitLen, h.Buckets[i+1].LowBound)
+			fmt.Fprintf(w, "%*f)", maxBucketDigitLen, h.Buckets[i+1].LowBound/unit)
 		} else {
 			fmt.Fprintf(w, "%*s)", maxBucketDigitLen, "inf")
 		}
diff --git a/benchmark/stats/stats.go b/benchmark/stats/stats.go
index d5f2220..03569ae 100644
--- a/benchmark/stats/stats.go
+++ b/benchmark/stats/stats.go
@@ -93,9 +93,6 @@
 		stats.unit = u
 	}
 
-	// Adjust the min/max according to the new unit.
-	stats.min /= int64(stats.unit)
-	stats.max /= int64(stats.unit)
 	numBuckets := stats.numBuckets
 	if n := int(stats.max - stats.min + 1); n < numBuckets {
 		numBuckets = n
@@ -108,7 +105,7 @@
 		MinValue:       stats.min})
 
 	for _, d := range stats.durations {
-		stats.histogram.Add(int64(d / stats.unit))
+		stats.histogram.Add(int64(d))
 	}
 
 	stats.dirty = false
@@ -122,7 +119,7 @@
 		fmt.Fprint(w, "Histogram (empty)\n")
 	} else {
 		fmt.Fprintf(w, "Histogram (unit: %s)\n", fmt.Sprintf("%v", stats.unit)[1:])
-		stats.histogram.Print(w)
+		stats.histogram.PrintWithUnit(w, float64(stats.unit))
 	}
 }