return cfg, err
		}
		if inlineBlock > 128*humanize.KiByte {
			configLogOnceIf(context.Background(), fmt.Errorf("inline block value bigger than recommended max of 128KiB -> %s, performance may degrade for PUT please benchmark the changes", inlineBlockStr), inlineBlockStr)
		}
		cfg.inlineBlock = int64(inlineBlock)
	} else {
		cfg.inlineBlock = 128 * humanize.KiByte
	}

	cfg.initialized = true

	return cfg, nil
}

				fmt.Sprintf("bytes=%d-%d", objLen/4, objLen*3/4),
				// Read 100MiB of the object from the beginning
				fmt.Sprintf("bytes=%d-%d", 0, 100*humanize.MiByte),
				// Read 100MiB of the object from the end
				fmt.Sprintf("bytes=-%d", 100*humanize.MiByte),
			}
			for _, rangeHdr := range rangeHdrs {
				mkGetReq(oi, rangeHdr, caseNumber, sf)
				caseNumber++
			}
		}

	}

// Specific instances for HS256, HS384, HS512
var (
	SigningMethodHS256 *SigningMethodHMAC
	SigningMethodHS384 *SigningMethodHMAC
	SigningMethodHS512 *SigningMethodHMAC
)

const base64BufferSize = 64 * humanize.KiByte

var (
	base64BufPool sync.Pool
	hmacSigners   []*SigningMethodHMAC
)

func init() {
	base64BufPool = sync.Pool{
		New: func() interface{} {
			buf := make([]byte, base64BufferSize)
			return &buf

	var splCount uint64
	for i, count := range h {
		szInt := ObjectsHistogramIntervals[i]
		switch {
		case humanize.KiByte == szInt.start && szInt.end == humanize.MiByte-1:
			// spl interval: [1024B, 1MiB)
			res[szInt.name] = splCount
		case humanize.KiByte <= szInt.start && szInt.end <= humanize.MiByte-1:
			// intervals that fall within the spl interval above; they
			// appear earlier in this array of intervals, see

	fileSizeStr := r.Form.Get("filesize")

	blockSize, err := strconv.ParseUint(blockSizeStr, 10, 64)
	if err != nil {
		blockSize = 4 * humanize.MiByte // default value
	}

	fileSize, err := strconv.ParseUint(fileSizeStr, 10, 64)
	if err != nil {
		fileSize = 1 * humanize.GiByte // default value
	}

	opts := madmin.DriveSpeedTestOpts{
		Serial:    serial,
		BlockSize: blockSize,
		FileSize:  fileSize,

	smallFileThreshold = 128 * humanize.KiByte // Optimized for NVMe/SSDs

	// For hardrives it is possible to set this to a lower value to avoid any
	// spike in latency. But currently we are simply keeping it optimal for SSDs.

	// bigFileThreshold is the point where we add readahead to put operations.
	bigFileThreshold = 128 * humanize.MiByte

	// XL metadata file carries per object metadata.

	fileSizeStr := r.Form.Get("filesize")

	blockSize, err := strconv.ParseUint(blockSizeStr, 10, 64)
	if err != nil {
		blockSize = 4 * humanize.MiByte // default value
	}

	fileSize, err := strconv.ParseUint(fileSizeStr, 10, 64)
	if err != nil {
		fileSize = 1 * humanize.GiByte // default value
	}

	opts := madmin.DriveSpeedTestOpts{
		Serial:    serial,
		BlockSize: blockSize,
		FileSize:  fileSize,

	// Limit of location constraint XML for unauthenticated PUT bucket operations.
	maxLocationConstraintSize = 3 * humanize.MiByte

	// Maximum size of default bucket encryption configuration allowed
	maxBucketSSEConfigSize = 1 * humanize.MiByte

	// diskFillFraction is the fraction of a disk we allow to be filled.
	diskFillFraction = 0.99

func BenchmarkPutObjectPart5MbFS(b *testing.B) {
	benchmarkPutObjectPart(b, "FS", 5*humanize.MiByte)
}

// BenchmarkPutObjectPart5MbErasure - Benchmark Erasure.PutObjectPart() for object size of 5MB.
func BenchmarkPutObjectPart5MbErasure(b *testing.B) {
	benchmarkPutObjectPart(b, "Erasure", 5*humanize.MiByte)
}

// BenchmarkPutObjectPart10MbFS - Benchmark FS.PutObjectPart() for object size of 10MB.

		Hidden: true,
		EnvVar: "MINIO_MEMLIMIT",
	},
	cli.IntFlag{
		Name:   "send-buf-size",
		Value:  4 * humanize.MiByte,
		EnvVar: "MINIO_SEND_BUF_SIZE",
		Hidden: true,
	},
	cli.IntFlag{
		Name:   "recv-buf-size",
		Value:  4 * humanize.MiByte,
		EnvVar: "MINIO_RECV_BUF_SIZE",
		Hidden: true,
	},
	cli.StringFlag{
		Name:   "log-dir",