for _, n := range sizes {
		if isRaceBuilder && n > 4<<10 {
			continue
		}
		b.Run(valName(n), func(b *testing.B) {
			if len(bmbuf) < n {
				bmbuf = make([]byte, n)
			}
			b.SetBytes(int64(n))
			f(b, n)
		})
	}
}

var indexSizes = []int{10, 32, 4 << 10, 4 << 20, 64 << 20}

var isRaceBuilder = strings.HasSuffix(testenv.Builder(), "-race")

const p256CompressedLength = 1 + p256ElementLength

// SetBytes sets p to the compressed, uncompressed, or infinity value encoded in
// b, as specified in SEC 1, Version 2.0, Section 2.3.4. If the point is not on
// the curve, it returns nil and an error, and the receiver is unchanged.
// Otherwise, it returns p.
func (p *P256Point) SetBytes(b []byte) (*P256Point, error) {

		panic("ed25519: bad public key length: " + strconv.Itoa(l))
	}

	if len(sig) != SignatureSize || sig[63]&224 != 0 {
		return false
	}

	A, err := (&edwards25519.Point{}).SetBytes(publicKey)
	if err != nil {
		return false
	}

	kh := sha512.New()
	if domPrefix != domPrefixPure {
		kh.Write([]byte(domPrefix))
		kh.Write([]byte{byte(len(context))})
		kh.Write([]byte(context))

	benchStr := Repeat(benchmarkString,
		(indexSizes[len(indexSizes)-1]+len(benchmarkString)-1)/len(benchmarkString))
	benchFunc := func(b *testing.B, benchStr string) {
		b.SetBytes(int64(len(benchStr)))
		for i := 0; i < b.N; i++ {
			Count(benchStr, "=")
		}
	}
	for _, size := range indexSizes {
		b.Run(fmt.Sprintf("%d", size), func(b *testing.B) {

						benchmark(b, h, int64(size), int64(align))
					})
				}
			})
		}
	}
}

func benchmark(b *testing.B, h hash.Hash32, n, alignment int64) {
	b.SetBytes(n)
	data := make([]byte, n+alignment)
	data = data[alignment:]
	for i := range data {
		data[i] = byte(i)
	}
	in := make([]byte, 0, h.Size())

	// Warm up
	h.Reset()
	h.Write(data)

	defer server.Close()

	cleanUp, err := startTestSocketPeer(b, client, "r", bench.chunkSize, fileSize)
	if err != nil {
		client.Close()
		b.Fatal(err)
	}
	defer cleanUp(b)

	b.ReportAllocs()
	b.SetBytes(int64(bench.chunkSize))
	b.ResetTimer()

	// Data go from file to socket via sendfile(2).
	sent, err := io.Copy(server, f)
	if err != nil {
		b.Fatalf("failed to copy data with sendfile, error: %v", err)
	}

	data, err := os.ReadFile("../testdata/video-001.gif")
	if err != nil {
		b.Fatal(err)
	}
	cfg, err := DecodeConfig(bytes.NewReader(data))
	if err != nil {
		b.Fatal(err)
	}
	b.SetBytes(int64(cfg.Width * cfg.Height))
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		Decode(bytes.NewReader(data))
	}
}

func TestReencodeExtendedPalette(t *testing.T) {

	var serialBytes [16]byte
	rand.Read(serialBytes[:])

	template := &Certificate{
		SerialNumber: new(big.Int).SetBytes(serialBytes[:]),
		Subject: pkix.Name{
			CommonName: name,
		},
		NotBefore:             time.Unix(1000, 0),
		NotAfter:              time.Unix(2000, 0),
		KeyUsage:              KeyUsageCertSign,

--MyBoundary--
`

func benchmarkReadRequest(b *testing.B, request string) {
	request = request + "\n"                            // final \n
	request = strings.ReplaceAll(request, "\n", "\r\n") // expand \n to \r\n
	b.SetBytes(int64(len(request)))
	r := bufio.NewReader(&infiniteReader{buf: []byte(request)})
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		_, err := ReadRequest(r)
		if err != nil {

	data, err := os.ReadFile(filename)
	if err != nil {
		b.Fatal(err)
	}
	cfg, err := DecodeConfig(bytes.NewReader(data))
	if err != nil {
		b.Fatal(err)
	}
	b.SetBytes(int64(cfg.Width * cfg.Height * 4))
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		Decode(bytes.NewReader(data))
	}
}

func BenchmarkDecodeBaseline(b *testing.B) {