Why JCMD throws "native memory tracking is not enabled" message even though NMT is enabled?

Question

I am facing this weird problem. I want to track native memory usage of the JVM. I followed instructions provided in Oracle doc, added NMT enable flag and recycled Tomcat JVM. After that when I tried to see native memory usage using JCMD, I got "native memory tracking is not enabled" message. Do you think I am missing something?

Here is the screen print

Answer 1

set -XX:NativeMemoryTracking=detail