ch <- prometheus.MustNewConstMetric(
				prometheus.NewDesc(
					prometheus.BuildFQName(bucketNamespace, "objects", "histogram"),
					"Total number of objects of different sizes in a bucket",
					[]string{"bucket", "object_size"}, nil),
				prometheus.GaugeValue,
				float64(v),
				bucket,
				k,
			)
		}
		for k, v := range usageInfo.ObjectVersionsHistogram {
			ch <- prometheus.MustNewConstMetric(

//
//	maxPartsCount - 10000
//	maxMultipartPutObjectSize - 5TiB
func optimalPartSize(objectSize int64) (partSize int64, err error) {
	// object size is '-1' set it to 5TiB.
	if objectSize == -1 {
		objectSize = maxMultipartPutObjectSize
	}

	// object size is larger than supported maximum.
	if objectSize > maxMultipartPutObjectSize {
		err = errors.New("entity too large")
		return partSize, err
	}

		go func(i int) {
			defer wg.Done()
			for {
				t := time.Now()
				reader := newRandomReader(opts.objectSize)
				tmpObjName := pathJoin(objNamePrefix, fmt.Sprintf("%d/%d", i, objCountPerThread[i]))
				info, err := clnt.PutObject(uploadsCtx, opts.bucketName, tmpObjName, reader, int64(opts.objectSize), popts)
				if err != nil {
					if !contextCanceled(uploadsCtx) && !errors.Is(err, context.Canceled) {

		erasure, err = NewErasure(ctx, latestMeta.Erasure.DataBlocks,
			latestMeta.Erasure.ParityBlocks, latestMeta.Erasure.BlockSize)
		if err != nil {
			return result, err
		}
	}

	result.ObjectSize, err = latestMeta.ToObjectInfo(bucket, object, true).GetActualSize()
	if err != nil {
		return result, err
	}

	// Loop to find number of disks with valid data, per-drive

			}
		}

		// Add the current part.
		fi.AddObjectPart(part.Number, part.ETag, part.Size, part.ActualSize, part.ModTime, part.Index, part.Checksums)
	}

	// Calculate full object size.
	var objectSize int64

	// Calculate consolidated actual size.
	var objectActualSize int64

	// Order online disks in accordance with distribution order.
	// Order parts metadata in accordance with distribution order.

	Checksum     *objectAttributesChecksum `xml:",omitempty"`
	ObjectParts  *objectAttributesParts    `xml:",omitempty"`
	StorageClass string                    `xml:",omitempty"`
	ObjectSize   int64                     `xml:",omitempty"`
}

type objectAttributesChecksum struct {
	ChecksumCRC32     string `xml:",omitempty"`
	ChecksumCRC32C    string `xml:",omitempty"`

		valid = false
		return opts, valid
	}

	for tag := range opts.ObjectAttributes {
		switch tag {
		case xhttp.ETag:
		case xhttp.Checksum:
		case xhttp.StorageClass:
		case xhttp.ObjectSize:
		case xhttp.ObjectParts:
		default:
			apiErr = errorCodes.ToAPIErr(ErrInvalidAttributeName)
			argumentName = strings.ToLower(xhttp.AmzObjectAttributes)
			argumentValue = tag
			valid = false

	}
	healOpts := madmin.HealOpts{
		Remove:   healDeleteDangling,
		ScanMode: scanMode,
	}
	res, _ := o.HealObject(ctx, i.bucket, i.objectPath(), oi.VersionID, healOpts)
	if res.ObjectSize > 0 {
		return res.ObjectSize
	}
	return 0
}

func (i *scannerItem) alertExcessiveVersions(remainingVersions int, cumulativeSize int64) {
	if remainingVersions >= int(scannerExcessObjectVersions.Load()) {

		}
	}()
	return ch, nil
}

func (client *peerRESTClient) SpeedTest(ctx context.Context, opts speedTestOpts) (SpeedTestResult, error) {
	values := make(url.Values)
	values.Set(peerRESTSize, strconv.Itoa(opts.objectSize))
	values.Set(peerRESTConcurrent, strconv.Itoa(opts.concurrency))
	values.Set(peerRESTDuration, opts.duration.String())
	values.Set(peerRESTStorageClass, opts.storageClass)
	values.Set(peerRESTBucket, opts.bucketName)

	duration, err := time.ParseDuration(durationStr)
	if err != nil {
		duration = time.Second * 10
	}

	done := keepHTTPResponseAlive(w)

	result, err := selfSpeedTest(r.Context(), speedTestOpts{
		objectSize:      size,
		concurrency:     concurrent,
		duration:        duration,
		storageClass:    storageClass,
		bucketName:      bucketName,
		enableSha256:    enableSha256,
		enableMultipart: enableMultipart,