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javajvmjava-8jvm-hotspotjmc

Java Flight Recorder -- missing File Write/Read events

I am analyzing java8 JVM-process with Java Mission Control + Flight Recorder.

When checking the recording under I/O tab, it says:

"Event types 'File Write' 'File Read' are not enabled in this recording"

When creating the recording, in the recording wizard, last dialog Event Details..., as far as I can see, everything already has Enabled=True, but I cannot find any setting for File Write/Read...

How do I enable them?

Solution

  • File and Socket Read/Write events are only available in JDK 7u40+ and JDK 8u20+