Message latency metrics
Datacenter Messaging Latency [cross-dc-latency]
The min, median, max, 90th, and 99th percentiles of the message latency between nodes in the same or different destination datacenter. This metric measures how long it takes a message from a node in the source datacenter to reach a node in the destination datacenter. Selecting a destination node within the source datacenter yields lower latency values.
Node Messaging Latency [cross-node-latency]
The min, median, max, 90th, and 99th percentiles of the latency of messages between nodes. The time period starts when a node sends a message and ends when the current node receives it.