We have a couple tests that may fail intermittently on VMs that seem to be similarly configured to physical systems, but perhaps don't have the same level of responsiveness due to the host being busy.

We need to problem list these until they can be stabilised so that we can use VMs for testing in addition to physical systems.

Tests at issue are
JDK-8296083 : javax/swing/JTree/6263446/bug6263446.java fails intermittently on a VM
JDK-8296084 javax/swing/JSpinner/4788637/bug4788637.java fails intermittently on a VM

There's also one test that fails "always" on VMs which don't support sound devices :
JDK-8282463: javax/sound/sampled/Clip/DataPusherThreadCheck.java fails

There's a PR out for review for that which should resolve that aspect of the failure .. TBD on whether it really is root cause of other failures but they are much rarer.

So we would perhaps problem list that only if this fix isn't pushed .. as we'd at least need to see another case of it still failing anyway and file a new bug.