feat(storage): Benchmark with experimental MRD. (#11501)

Allow benchmarks to use the experimental MultiRangeDownloader for normal range reads.

Note that this does not use a single MultiRangeDownloader across multiple reads, which is supported but would require a more invasive change to the benchmark.

storage/internal/benchmarks/client_pool.go

@@ -22,6 +22,7 @@ import (
 	"time"
 
 	"cloud.google.com/go/storage"
+	"cloud.google.com/go/storage/experimental"
 	"golang.org/x/net/http2"
 	"google.golang.org/api/option"
 	htransport "google.golang.org/api/transport/http"
@@ -137,6 +138,7 @@ func initializeClientPools(ctx context.Context, opts *benchmarkOptions) func() {
 					readBufferSize:     opts.readBufferSize,
 					connectionPoolSize: opts.connPoolSize,
 					endpoint:           opts.endpoint,
+					useGRPCBidiReads:   opts.gRPCBidiReads,
 				})
 			},
 			opts.numClients,
@@ -179,6 +181,7 @@ type clientConfig struct {
 	useJSON                         bool // only applicable to HTTP Clients
 	setGCSFuseOpts                  bool // only applicable to HTTP Clients
 	connectionPoolSize              int  // only applicable to GRPC Clients
+	useGRPCBidiReads                bool // only applicable to GRPC Clients
 }
 
 func initializeHTTPClient(ctx context.Context, config clientConfig) (*storage.Client, error) {
@@ -247,6 +250,9 @@ func initializeGRPCClient(ctx context.Context, config clientConfig) (*storage.Cl
 	if config.readBufferSize != useDefault {
 		opts = append(opts, option.WithGRPCDialOption(grpc.WithReadBufferSize(config.readBufferSize)))
 	}
+	if config.useGRPCBidiReads {
+		opts = append(opts, experimental.WithGRPCBidiReads())
+	}
 
 	client, err := storage.NewGRPCClient(ctx, opts...)
 

storage/internal/benchmarks/main.go

@@ -82,7 +82,8 @@ type benchmarkOptions struct {
 	minChunkSize int64
 	maxChunkSize int64
 
-	appendWrites bool
+	appendWrites  bool
+	gRPCBidiReads bool
 
 	forceGC      bool
 	connPoolSize int
@@ -145,6 +146,7 @@ func (b *benchmarkOptions) String() string {
 		fmt.Sprintf("range offset:\t\t%d - %d bytes ", b.minReadOffset, b.maxReadOffset),
 		fmt.Sprintf("range size:\t\t%d bytes (0 -> full object)", b.rangeSize),
 		fmt.Sprintf("append writes:\t\t%t", b.appendWrites),
+		fmt.Sprintf("gRPC bidi reads:\t%t", b.gRPCBidiReads),
 		fmt.Sprintf("connection pool size:\t%d (GRPC)", b.connPoolSize),
 		fmt.Sprintf("num workers:\t\t%d (max number of concurrent benchmark runs at a time)", b.numWorkers),
 		fmt.Sprintf("force garbage collection:%t", b.forceGC),
@@ -189,6 +191,7 @@ func parseFlags() {
 	flag.Int64Var(&opts.maxChunkSize, "max_chunksize", useDefault, "max chunksize in bytes")
 
 	flag.BoolVar(&opts.appendWrites, "append_writes", false, "use the append writer")
+	flag.BoolVar(&opts.gRPCBidiReads, "grpc_bidi_reads", false, "use BidiReadObject for gRPC reads")
 
 	flag.IntVar(&opts.connPoolSize, "connection_pool_size", 4, "GRPC connection pool size")
 
@@ -233,8 +236,14 @@ func parseFlags() {
 		}
 	}
 
-	if opts.appendWrites && (opts.api != grpcAPI && opts.api != directPath) {
-		log.Fatalf("--append_writes requires GRPC or DirectPath; got %v", opts.api)
+	if opts.api != grpcAPI && opts.api != directPath {
+		if opts.appendWrites {
+			log.Fatalf("--append_writes requires GRPC or DirectPath; got %v", opts.api)
+		}
+
+		if opts.gRPCBidiReads {
+			log.Fatalf("--grpc_bidi_reads requires GRPC or DirectPath; got %v", opts.api)
+		}
 	}
 }