Initially Java Flight Recorder (JFR) and Java Mission Control (JMC) were sold as commercial JDK add-on features by Oracle. Now these capabilities that enable runtime data gathering from #Java applications will arrive in the OSS version of the Java runtime, i.e. the OpenJDK. JFR enables in-depth Java app monitoring paying just 1% of CPU overhead.

#Java14

https://openjdk.java.net/jeps/349
https://loxal.net/news.html