Comparing alternatives to jstack and jcmd with FusionReactor

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FusionReactor is a full-blown APM, but let’s keep the comparison fair

When considering alternatives to jstack and jcmd we want to emphasize that jcmd can only take statistics snapshots of the running JVM process which were available at the time of execution. On the other hand, FusionReactor is a complete monitoring tool that supports a huge range of monitoring options including Garbage Collector (GC), heap allocation, JDBC, Web performance, Live debugging, and a lot more. To be fair, we will only compare features that are available in both tools.

Console vs Web

The first big difference comes with the way both tools are launched. FusionReactor offers a web interface to monitor your JVM processes. The interface can be launched locally or through the Cloud in order to monitor remote processes in a production environment. On the other hand, jcmd can only be used within a terminal. Most people who get used to a great user experience offered by web or desktop apps will not feel comfortable opening the terminal to monitor the performance of the underlying application. Moreover, jcmd can only get snapshots of the JVM processes that run on the same host which means that jcmd does not support remote processes. In order to use jcmd in production, the developer will have to have ssh access to the remote machine. However, with FusionReactor it’s a matter of opening your browser.

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