(0.49) Add check for JFR enablement - #20879
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Currently, JFR is enabled by default on all platforms that support it, and it cannot be disabled. We have been using `-XX:+FlightRecorder` to indicate if the JVM should start with recording enabled. This is not consistent with the RI. With this change `-XX:[+|-]FlightRecorder` toggles whether JFR is enabled. By default JFR will remain enabled, but we now have the ability to disable it. `-XX:StartFlightRecording` will be used to indicate that a recording should be begin at startup. Signed-off-by: tajila <atobia@ca.ibm.com>
pshipton
approved these changes
Jan 2, 2025
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Currently, JFR is enabled by default on all platforms that support it, and it cannot be disabled. We have been using
-XX:+FlightRecorderto indicate if the JVM should start with recording enabled. This is not consistent with the RI.With this change
-XX:[+|-]FlightRecordertoggles whether JFR is enabled. By default JFR will remain enabled, but we now have the ability to disable it.-XX:StartFlightRecordingwill be used to indicate that a recording should be begin at startup.Backport of #20854