for index := range sys.peerClients {
		if sys.peerClients[index] == nil {
			continue
		}
		index := index
		g.Go(func() error {
			var err error
			reports[index], err = sys.peerClients[index].MonitorBandwidth(ctx, buckets)
			return err
		}, index)
	}

	for index, err := range g.Wait() {
		reqInfo := (&logger.ReqInfo{}).AppendTags("peerAddress",
			sys.peerClients[index].host.String())