Thank you very much Kurt. I am not a java guy, need one small help. I initiated JMX connection but I am getting some exception:
java -jar ~/jmxterm-1.0-alpha-4-uber.jar --url localhost:7199 Welcome to JMX terminal. Type "help" for available commands. $>run -b org.apache.cassandra.metrics:type=ClientRequest scope=CASWrite name=MutationSizeHistogram #InstanceNotFoundException: org.apache.cassandra.metrics:type=ClientRequest I verified, Cassandra is running on my machine. On Tue, Jul 25, 2017 at 9:36 PM, kurt greaves <k...@instaclustr.com> wrote: > Looks like you can collect MutationSizeHistogram for each write as well > from the coordinator, in regards to write request size. See the Write > request section under https://cassandra.apache.org/ > doc/latest/operating/metrics.html#client-request-metrics > > >