Hi Jun, Here's a tool for dumping JMX contents: https://github.com/sematext/jmxc Here's a tool/service for monitoring Cassandra: https://sematext.com/spm/integrations/cassandra-monitoring/
Otis -- Monitoring - Log Management - Alerting - Anomaly Detection Solr & Elasticsearch Consulting Support Training - http://sematext.com/ On Mon, Jun 13, 2016 at 5:17 PM, Jun Wu <wuxiaomi...@hotmail.com> wrote: > Hi there, > > I've deployed 6 node in Amazon EC2. I'm trying to monitor some metrics > for each node and print them out when I write/read data into Cassandra. > Specifically I want to print out the information about garbage collection > and compaction. > > I do notice that there's metrics for compaction in o.a.c.metrics. > CompactionMetrics.java. But I don't know how to get them, I've tried method > below: > > CompactionMetrics metrics = new CompactionMetrics(); > System.out.println(metrics.pendingtasks); > > But it doesn't work. > > ************* > Another/same question is about the garbage collection, any idea on where > should I refer to and get the information about garbage collection, like > garbage collection count, collection time, etc. > > Any hint will be appreciated. > > Thanks! > > Jun >
