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++
			}
		}

	}

	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,

	c.Assert(err, nil)
	c.Assert(response.StatusCode, 200)

	// Create a byte array of 5MB.
	// content for the object to be uploaded.
	data := bytes.Repeat([]byte("0123456789abcdef"), 5*humanize.MiByte/16)
	// calculate etag of the data.
	etagBase64 := getMD5HashBase64(data)

	buffer1 := bytes.NewReader(data)
	objectName := "test-1-object"
	// HTTP request for the object to be uploaded.

		go p.AddMRFWorker()
	}
	for p.mrfWorkerSize > n {
		p.mrfWorkerSize--
		go func() { p.mrfWorkerKillCh <- struct{}{} }()
	}
}

const (
	minLargeObjSize = 128 * humanize.MiByte // 128MiB
)

// getWorkerCh gets a worker channel deterministically based on bucket and object names.
// Must be able to grab read lock from p.