RFR: 8273821: Limit parallelism for sanity/client/SwingSet tests

[Sergey Bylokhov]

On Wed, 15 Sep 2021 14:18:09 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> If you run them today on a parallel machine with the usual invocation:
> 
> $ CONF=linux-x86_64-server-fastdebug make run-test TEST=sanity/client/SwingSet/
> 
> ...then a whole lot of these tests would fail. It seems to be caused by the overlapping GUI windows that robots fail to reach properly then. It seems these tests need to be run exclusively. 
> 
> @mrserb, maybe I am missing something? How do you run these tests? 
> 
> Additional testing:
>  - [x] `sanity/client/SwingSet/` tests now pass on TR 3970X

This is applicable to all headful tests, at least most of them. You should filter them out when default concurrency is used. And then run only headful test using TEST_JOBS=1

I think there is a bug somewhere to enhance the "exclusiveAccess" option to support the tags, so the real fix should be:
exclusiveAccess.key=headful

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PR: https://git.openjdk.java.net/jdk/pull/5533