metricsGroupOpts: opts,
	}
	mg.RegisterRead(func(ctx context.Context) (metrics []MetricV2) {
		objLayer := newObjectLayerFn()
		if objLayer == nil {
			return
		}

		metrics = make([]MetricV2, 0, 50)
		dataUsageInfo, err := loadDataUsageFromBackend(ctx, objLayer)
		if err != nil {
			metricsLogIf(ctx, err)
			return
		}

		// data usage has not captured any data yet.

}

const (
	// WorkerMaxLimit max number of workers per node for "fast" mode
	WorkerMaxLimit = 500

	// WorkerMinLimit min number of workers per node for "slow" mode
	WorkerMinLimit = 50

	// WorkerAutoDefault is default number of workers for "auto" mode
	WorkerAutoDefault = 100

	// MRFWorkerMaxLimit max number of mrf workers per node for "fast" mode
	MRFWorkerMaxLimit = 8