I have cassandra 2.1 + OpsCenter 5.1.1 and test them. When I monitored with opscenter 'read requests' graph, it seems the number on the graph is not what I expected, the number of client requests or responses.
I recorded actual number of client request and compare it with graph, then found they're different. The number on the graph is about 4 times larger than what the client claimed. So, my question is what 'Read Reuqests' on OpsCenter counts exaclty ? Thanks ! -- Regards, Jang. a sound mind in a sound body