}
	}

	unparsableRangeSpecs := []string{
		"bytes=-",
		"bytes==",
		"bytes==1-10",
		"bytes=",
		"bytes=aa",
		"aa",
		"",
		"bytes=1-10-",
		"bytes=1--10",
		"bytes=-1-10",
		"bytes=0-+3",
		"bytes=+3-+5",
		"bytes=10-11,12-10", // Unsupported by S3/MinIO (valid in RFC)
	}
	for i, urs := range unparsableRangeSpecs {
		rs, err := parseRequestRangeSpec(urs)

pLocksInfo","admin:OBDInfo","admin:BandwidthMonitor"],"Resource":["arn:aws:s3:::*"]}]},"readonly":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetBucketLocation","s3:GetObject"],"Resource":["arn:aws:s3:::*"]}]},"readwrite":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:*"],"Resource":["arn:aws:s3:::*"]}]},"writeonly":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:PutObject"],"Resource":["arn:aws:s3:::*"]}]}}`,

		// Built-in...

var _VersionType_index = [...]uint8{0, 18, 28, 38, 48, 63}

func (i VersionType) String() string {
	if i >= VersionType(len(_VersionType_index)-1) {
		return "VersionType(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _VersionType_name[_VersionType_index[i]:_VersionType_index[i+1]]
}
func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.

	_ = x[storageMetricWalkDir-5]
	_ = x[storageMetricListDir-6]
	_ = x[storageMetricReadFile-7]
	_ = x[storageMetricAppendFile-8]
	_ = x[storageMetricCreateFile-9]
	_ = x[storageMetricReadFileStream-10]
	_ = x[storageMetricRenameFile-11]
	_ = x[storageMetricRenameData-12]
	_ = x[storageMetricCheckParts-13]
	_ = x[storageMetricDelete-14]
	_ = x[storageMetricDeleteVersions-15]
	_ = x[storageMetricVerifyFile-16]

	payload := []byte(`<?xml version="1.0" encoding="UTF-8"?><Progress><BytesScanned>` +
		strconv.FormatInt(bytesScanned, 10) + `</BytesScanned><BytesProcessed>` +
		strconv.FormatInt(bytesProcessed, 10) + `</BytesProcessed><BytesReturned>` +
		strconv.FormatInt(bytesReturned, 10) + `</BytesReturned></Stats>`)
	return genMessage(progressHeader, payload)
}

// Refer genStatsHeader().
var statsHeader = []byte{

	{dataBlocks: 5, disks: 10, offDisks: 3, badDisks: 0, badStaleDisks: 3, blocksize: int64(oneMiByte / 2), size: oneMiByte, algorithm: SHA256, shouldFail: true},                 // 9
	{dataBlocks: 4, disks: 8, offDisks: 1, badDisks: 1, badStaleDisks: 0, blocksize: int64(blockSizeV2), size: oneMiByte, algorithm: DefaultBitrotAlgorithm, shouldFail: false},   // 10

	_ = x[HandlerLockUnlock-3]
	_ = x[HandlerLockRUnlock-4]
	_ = x[HandlerLockRefresh-5]
	_ = x[HandlerLockForceUnlock-6]
	_ = x[HandlerWalkDir-7]
	_ = x[HandlerStatVol-8]
	_ = x[HandlerDiskInfo-9]
	_ = x[HandlerNSScanner-10]
	_ = x[HandlerReadXL-11]
	_ = x[HandlerReadVersion-12]
	_ = x[HandlerDeleteFile-13]
	_ = x[HandlerDeleteVersion-14]
	_ = x[HandlerUpdateMetadata-15]
	_ = x[HandlerWriteMetadata-16]
	_ = x[HandlerCheckParts-17]

	mg := &MetricsGroupV2{
		cacheInterval: 10 * time.Second,
	}
	mg.RegisterRead(func(ctx context.Context) []MetricV2 {
		return getHistogramMetrics(bucketHTTPRequestsDuration,
			getBucketTTFBDistributionMD(), true)
	})
	return mg
}

func getS3TTFBMetric() *MetricsGroupV2 {
	mg := &MetricsGroupV2{
		cacheInterval: 10 * time.Second,
	}

		ReadTicks:    stats[3],
		WriteIOs:     stats[4],
		WriteMerges:  stats[5],
		WriteSectors: stats[6],
		WriteTicks:   stats[7],
		CurrentIOs:   stats[8],
		TotalTicks:   stats[9],
		ReqTicks:     stats[10],
	}
	// as per the doc, only 11 fields are guaranteed
	// only set if available
	if len(stats) > 14 {
		iostats.DiscardIOs = stats[11]
		iostats.DiscardMerges = stats[12]
		iostats.DiscardSectors = stats[13]

	return