go.net/ipv4: add datagram benchmark
Current result on darwin/amd64:
BenchmarkReadWriteNetUDP-2 100000 16112 ns/op 330 B/op 6 allocs/op
BenchmarkReadWriteIPv4UDP-2 200000 14337 ns/op 654 B/op 14 allocs/op
Update golang/go#3684
R=dave
CC=golang-dev
https://golang.org/cl/10125044
diff --git a/ipv4/unicast_test.go b/ipv4/unicast_test.go
index 5a0061e..23552ec 100644
--- a/ipv4/unicast_test.go
+++ b/ipv4/unicast_test.go
@@ -13,6 +13,76 @@
"testing"
)
+func benchmarkUDPListener() (net.PacketConn, net.Addr, error) {
+ c, err := net.ListenPacket("udp4", "127.0.0.1:0")
+ if err != nil {
+ return nil, nil, err
+ }
+ dst, err := net.ResolveUDPAddr("udp4", c.LocalAddr().String())
+ if err != nil {
+ c.Close()
+ return nil, nil, err
+ }
+ return c, dst, nil
+}
+
+func BenchmarkReadWriteNetUDP(b *testing.B) {
+ c, dst, err := benchmarkUDPListener()
+ if err != nil {
+ b.Fatalf("benchmarkUDPListener failed: %v", err)
+ }
+ defer c.Close()
+
+ wb, rb := []byte("HELLO-R-U-THERE"), make([]byte, 128)
+ b.ResetTimer()
+ for i := 0; i < b.N; i++ {
+ benchmarkReadWriteNetUDP(b, c, wb, rb, dst)
+ }
+}
+
+func benchmarkReadWriteNetUDP(b *testing.B, c net.PacketConn, wb, rb []byte, dst net.Addr) {
+ if _, err := c.WriteTo(wb, dst); err != nil {
+ b.Fatalf("net.PacketConn.WriteTo failed: %v", err)
+ }
+ if _, _, err := c.ReadFrom(rb); err != nil {
+ b.Fatalf("net.PacketConn.ReadFrom failed: %v", err)
+ }
+}
+
+func BenchmarkReadWriteIPv4UDP(b *testing.B) {
+ c, dst, err := benchmarkUDPListener()
+ if err != nil {
+ b.Fatalf("benchmarkUDPListener failed: %v", err)
+ }
+ defer c.Close()
+
+ p := ipv4.NewPacketConn(c)
+ cf := ipv4.FlagTTL | ipv4.FlagInterface
+ if err := p.SetControlMessage(cf, true); err != nil {
+ b.Fatalf("ipv4.PacketConn.SetControlMessage failed: %v", err)
+ }
+ ifi := loopbackInterface()
+
+ wb, rb := []byte("HELLO-R-U-THERE"), make([]byte, 128)
+ b.ResetTimer()
+ for i := 0; i < b.N; i++ {
+ benchmarkReadWriteIPv4UDP(b, p, wb, rb, dst, ifi)
+ }
+}
+
+func benchmarkReadWriteIPv4UDP(b *testing.B, p *ipv4.PacketConn, wb, rb []byte, dst net.Addr, ifi *net.Interface) {
+ cm := ipv4.ControlMessage{TTL: 1}
+ if ifi != nil {
+ cm.IfIndex = ifi.Index
+ }
+ if _, err := p.WriteTo(wb, &cm, dst); err != nil {
+ b.Fatalf("ipv4.PacketConn.WriteTo failed: %v", err)
+ }
+ if _, _, _, err := p.ReadFrom(rb); err != nil {
+ b.Fatalf("ipv4.PacketConn.ReadFrom failed: %v", err)
+ }
+}
+
func TestReadWriteUnicastIPPayloadUDP(t *testing.T) {
c, err := net.ListenPacket("udp4", "127.0.0.1:0")
if err != nil {
