userMetadata[globalObjectPerfUserMetadata] = "true" // Bypass S3 API freeze
	popts := minio.PutObjectOptions{
		UserMetadata:         userMetadata,
		DisableContentSha256: !opts.enableSha256,
		DisableMultipart:     !opts.enableMultipart,
	}

	clnt := globalMinioClient
	if !globalAPIConfig.permitRootAccess() {
		region := globalSite.Region()
		if region == "" {
			region = "us-east-1"
		}

	autotune := r.Form.Get("autotune") == "true"
	noClear := r.Form.Get("noclear") == "true"
	enableSha256 := r.Form.Get("enableSha256") == "true"
	enableMultipart := r.Form.Get("enableMultipart") == "true"

	size, err := strconv.Atoi(sizeStr)
	if err != nil {
		size = 64 * humanize.MiByte
	}

	concurrent, err := strconv.Atoi(concurrentStr)
	if err != nil {