Java Flight Control - Keep Last N Minutes record data

Question

Can someone let me know in Java Flight Control started via Java Mission Control if it is possible to keep only last N minutes of data under continuous recording?

I have gone through this discussion but I am not able to find where I have to pass the disk=true parameter. The options that I have been using looks like below.

Environment:-

• Java 8
• Mac OS X
• Java Mission Control 5.5.1 (M5.5.1-15, 172852)

Answer 1

It's only disk recordings that allow you to set maximum age or maximum size. So if you use the wizard in JMC you will get a disk recording by default.

Answer 2

Please try

java -XX:+FlightRecorder -XX:FlightRecorderOptions=disk=true ... app.java

This will work on JRocket VM.

For Oracle VM you need first to unlock commercial features

java -XX:+UnlockCommericalFeatures -XX:+FlightRecorder -XX:FlightRecorderOptions=disk=true ... app.java