jmap jmap -dump:format=b,file=heap.bin [JAVA_PID] jmap -histo:live sudo /usr/java/java/bin/jmap -permstat [JAVA_PID] jcmd jcmd GC.heap_dump Full GC してからダンプ jcmd GC.run Add -XX:+UnlockDiagnosticVMOptions to your JVM options, then cap…