java - Failed to initialize tracing backend -


when try use java flight recorder error stating java "failed initialize tracing backend" when starting java.

my command line is:

-xx:+unlockcommercialfeatures -xx:+flightrecorder -xx:startflightrecording=compress=true,delay=10000,maxage=1440,filename=test.jfr -xx:flightrecorderoptions=defaultrecording=true,dist=true,loglevel=trace,settings=profile.jfc,dumponexit=true

the java flight recorder has dreadful documentation , error reporting. error number of reasons. seems if have more 1 mistake in command line - no errors reported correctly.

possible mistakes include:

  • mistyping parameter. had typed dist=true instead of disk=true.
  • entering number time.

although documentation says:

maxage=time specifies maximum age (in minutes) of disk data default recording.

what means must specify unit. example 30m half hour or 30s half minute. applies other times too:

delay=time specifies delay (in milliseconds) between java application launch time , start of recording.


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