if len(buckets) == 0 {
		return nil
	}
	for bucket, inOut := range globalBucketConnStats.getBucketS3InOutBytes(buckets) {
		recvBytes := inOut.In
		if recvBytes > 0 {
			m.Set(apiTrafficSentBytes, float64(recvBytes), "bucket", bucket, "type", "s3")
		}
		sentBytes := inOut.Out
		if sentBytes > 0 {
			m.Set(apiTrafficRecvBytes, float64(sentBytes), "bucket", bucket, "type", "s3")
		}