Flight recording can be triggered programmatically?

Registration of mission control Java function flight looks great and seems to be perfect for the production of ex problems troubleshooting. High CPU utilization. I had a question - the recording of the flight is triggered by the java application programming? I understand that flight recording can be triggered through the jvm options like - XX:StartFlightRecording = duration = 60 s, filename = myrecording.jfr, but that's not what I'm referring too. I am also aware that the use of flight recording in production environments requires a license of Advanced Java SE.

I see two benefits of programmatically trigger the recording of the flight

1 to avoid manual intervention in the connection to all production environments (which seems impossible when there are more than hundreds of running Java virtual machines)?

2. less than reliability on the team of support and operations to know how of the flight record?

I view it to be triggered by a thread that monitors the jmx metrics periodically (for example ProcessJVMLoad) and triggered a flight to check if the value exceeds 90% (for 3 times consecutively). The recording of the flight could be a specific time and location can be selected in the configuration.

Hi Andy,.

Seems that jconsole can not handle more complex parameters. Instead, use the JMC JMX console. The JMX Console of JMC has even a special tab where you can play with the controls of diagnosis.

The flight recorder MBean must be properly initialized and registered. If you use the JMC to start a recording, for example, it will be initialized. So one way you can play with her, she at first to start a recording, then use the JMX Console of JMC to play with the MBean. I hesitate to post the code here how to use this MBean is not supported.

To programmatically call the DiagnosticCommandMBean with, just do it like you would for any remote JMX operation.

Kind regards

Marcus

Tags: Java

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