Why the toolbar shows node count * throughput compared to metrics gotten from metrics page or using REST API. So here the metric gotten from GUI or masternode is litte under 4000. (5 nodes, 5*4000=20000). Metric used: org.graylog2.throughput.input.1-sec-rate
When using curl to get the metrics, only MASTER node shows counts which could be the actual metrics, if asked from other nodes, results are 0 or very near of it.