During stress testing, jcmd Thread.print failed to connect to process with
java.io.IOException: Connection refused
at jdk.attach/sun.tools.attach.VirtualMachineImpl.connect(Native Method)
at jdk.attach/sun.tools.attach.VirtualMachineImpl.execute(VirtualMachineImpl.java:159)
at jdk.attach/sun.tools.attach.HotSpotVirtualMachine.executeCommand(HotSpotVirtualMachine.java:309)
at jdk.attach/sun.tools.attach.HotSpotVirtualMachine.executeJCmd(HotSpotVirtualMachine.java:291)
at jdk.jcmd/sun.tools.jcmd.JCmd.executeCommandForPid(JCmd.java:124)
at jdk.jcmd/sun.tools.jcmd.JCmd.main(JCmd.java:97)