improve benchmark tests again :)

benchmark_test.go

@@ -80,12 +80,13 @@ func setFlowControlParameters(mgr *handshake.ConnectionParametersManager) {
 }
 
 var _ = Describe("Benchmarks", func() {
+	dataLen := 50 /* MB */ * (1 << 20)
+	data := make([]byte, dataLen)
+
 	for i := range protocol.SupportedVersions {
 		version := protocol.SupportedVersions[i]
 
 		Context(fmt.Sprintf("with version %d", version), func() {
-			dataLen := 50 /* MB */ * (1 << 20)
-			data := make([]byte, dataLen)
 
 			Measure("two linked sessions", func(b Benchmarker) {
 				connID := protocol.ConnectionID(mrand.Uint32())
@@ -128,7 +129,7 @@ var _ = Describe("Benchmarks", func() {
 				done := make(chan struct{})
 				go func() {
 					defer GinkgoRecover()
-					buf := make([]byte, 1024)
+					buf := make([]byte, 1500)
 					dataRead := 0
 					for dataRead < dataLen {
 						n, err := s2stream.Read(buf)
@@ -153,7 +154,7 @@ var _ = Describe("Benchmarks", func() {
 				c2.c <- nil
 
 				b.RecordValue("transfer rate [MB/s]", float64(dataLen)/1e6/runtime.Seconds())
-			}, 3)
+			}, 6)
 		})
 	}
 })