You can also collect these stats from the server via JMX, I believe the name of
the MBean object is
org.apache.cassandra.metrics:type=ColumnFamily,keyspace=,scope=,name=SSTablesPerReadHistogram
where KEYSPACE is your keyspace and SCOPE is Read or Write.
This has attributes for 50thPercentile, 7
Hey Jens,
Unfortunately the output of the nodetool histograms changes between
versions. While I think your script is useful, it's likely to break
between versions. You might be interested to weigh in on the JIRA ticket
to make the nodetool output machine friendly:
https://issues.apache.org/jira/
Hi,
I just quickly put together a tiny utility script to estimate
average/mean/min/max/percentiles for `nodetool cfhistogram` latency output.
Maybe could be useful to someone else, don’t know. You can find it here:
https://gist.github.com/JensRantil/3da67e39f50aaf4f5bce
Future improvements
