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Chapter 1. JFR creation options for Cryostat

With Cryostat, you can create a JDK Flight Recorder (JFR) recording that monitors the performance of your JVM in your containerized application. Additionally, you can take a snapshot of an active JFR recording to capture any collected data, up to a specific point in time, for your target JVM application.

Cryostat supports all of the following different ways to create JFR recordings:

  • You can use the Cryostat web console to create JFR recordings manually for target JVMs that are using a JMX or agent HTTP connection.
  • The Cryostat server can send on-demand requests over JMX or an agent HTTP connection to start JFR recordings dynamically based on automated rules.
  • The Cryostat agent can start JFR recordings automatically at agent startup based on a given event template as part of the agent harvester feature.
  • From Red Hat build of Cryostat 2.4 onward, the Cryostat agent can start JFR recordings dynamically based on MBean custom triggers and a given event template.

The rest of this document describes how to create a JFR recording manually in the Cryostat web console.

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