Add benchmarks for serializing PodList

pkg/api/testing/serialization_proto_test.go

@@ -25,7 +25,7 @@ import (
 	"testing"
 
 	"github.com/gogo/protobuf/proto"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/apitesting/fuzzer"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -165,6 +165,39 @@ func BenchmarkEncodeProtobufGeneratedMarshal(b *testing.B) {
 	b.StopTimer()
 }
 
+func BenchmarkEncodeProtobufGeneratedMarshalList10(b *testing.B) {
+	item := benchmarkItemsList(b, 10)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if _, err := item.Marshal(); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
+}
+
+func BenchmarkEncodeProtobufGeneratedMarshalList100(b *testing.B) {
+	item := benchmarkItemsList(b, 100)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if _, err := item.Marshal(); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
+}
+
+func BenchmarkEncodeProtobufGeneratedMarshalList1000(b *testing.B) {
+	item := benchmarkItemsList(b, 1000)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if _, err := item.Marshal(); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
+}
+
 // BenchmarkDecodeCodecToInternalProtobuf measures the cost of performing a codec decode,
 // including conversions and any type setting. This is a "full" decode.
 func BenchmarkDecodeCodecToInternalProtobuf(b *testing.B) {