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vendor/google.golang.org/grpc/codec_benchmark_test.go

@@ -0,0 +1,115 @@
+// +build go1.7
+
+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+package grpc
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	"google.golang.org/grpc/test/codec_perf"
+)
+
+func setupBenchmarkProtoCodecInputs(b *testing.B, payloadBaseSize uint32) []proto.Message {
+	payloadBase := make([]byte, payloadBaseSize)
+	// arbitrary byte slices
+	payloadSuffixes := [][]byte{
+		[]byte("one"),
+		[]byte("two"),
+		[]byte("three"),
+		[]byte("four"),
+		[]byte("five"),
+	}
+	protoStructs := make([]proto.Message, 0)
+
+	for _, p := range payloadSuffixes {
+		ps := &codec_perf.Buffer{}
+		ps.Body = append(payloadBase, p...)
+		protoStructs = append(protoStructs, ps)
+	}
+
+	return protoStructs
+}
+
+// The possible use of certain protobuf APIs like the proto.Buffer API potentially involves caching
+// on our side. This can add checks around memory allocations and possible contention.
+// Example run: go test -v -run=^$ -bench=BenchmarkProtoCodec -benchmem
+func BenchmarkProtoCodec(b *testing.B) {
+	// range of message sizes
+	payloadBaseSizes := make([]uint32, 0)
+	for i := uint32(0); i <= 12; i += 4 {
+		payloadBaseSizes = append(payloadBaseSizes, 1<<i)
+	}
+	// range of SetParallelism
+	parallelisms := make([]uint32, 0)
+	for i := uint32(0); i <= 16; i += 4 {
+		parallelisms = append(parallelisms, 1<<i)
+	}
+	for _, s := range payloadBaseSizes {
+		for _, p := range parallelisms {
+			func(parallelism int, payloadBaseSize uint32) {
+				protoStructs := setupBenchmarkProtoCodecInputs(b, payloadBaseSize)
+				name := fmt.Sprintf("MinPayloadSize:%v/SetParallelism(%v)", payloadBaseSize, parallelism)
+				b.Run(name, func(b *testing.B) {
+					codec := &protoCodec{}
+					b.SetParallelism(parallelism)
+					b.RunParallel(func(pb *testing.PB) {
+						benchmarkProtoCodec(codec, protoStructs, pb, b)
+					})
+				})
+			}(int(p), s)
+		}
+	}
+}
+
+func benchmarkProtoCodec(codec *protoCodec, protoStructs []proto.Message, pb *testing.PB, b *testing.B) {
+	counter := 0
+	for pb.Next() {
+		counter++
+		ps := protoStructs[counter%len(protoStructs)]
+		fastMarshalAndUnmarshal(codec, ps, b)
+	}
+}
+
+func fastMarshalAndUnmarshal(protoCodec Codec, protoStruct proto.Message, b *testing.B) {
+	marshaledBytes, err := protoCodec.Marshal(protoStruct)
+	if err != nil {
+		b.Errorf("protoCodec.Marshal(_) returned an error")
+	}
+	if err := protoCodec.Unmarshal(marshaledBytes, protoStruct); err != nil {
+		b.Errorf("protoCodec.Unmarshal(_) returned an error")
+	}
+}