jcmd <PID> PerfCounter.print
jcmd <PID> Thread.print
jcmd <PID> ManagementAgent.start
top -H -p <PID>
printf "%x" <PID>
strace -f -v -p <PID>
jmc
jvisualvm
-XX:+UnlockCommercialFeatures -XX:+FlightRecorder
jcmd <PID> JFR.start duration=60s filename=myrecording.jfr