You get JFR's precision but inherit its blind spots as described in [1]: > demo1: ... JFR will not report anything useful at all, since it cannot traverse stac

You get JFR's precision but inherit its blind spots as described in [1]: > demo1: ... JFR will not report anything useful at all, since it cannot traverse stack traces when JVM is running System.arraycopy() I'd rather run jstack in a loop than lose System.arraycopy() (or, in fact, any native code be it JVM's or JNI). [1] https://github.com/apangin/java-profiling-presentation https://github.com/apangin/java-profiling-presentation