RFR: 8273315: Parallelize and increase timeouts for java/foreign/TestMatrix.java test

[Aleksey Shipilev]

On Tue, 7 Sep 2021 13:58:48 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

> How is this test executed? I think when this was added the idea was that this had to be an advanced test which had to be run explicitly by users, but would not be picked up in the various test groups/tiers. I'm defo not seeing it running in the `jdk_foreign` group, so it shouldn't run on tier4. I'm not sure what's happening?

As I wrote in PR, "This is especially pronounced when run in prospective tier4 runs (JDK-8273314)." -- that group was supposed to run all tests not caught by other tiers. That work seems to be stalled a bit. See also JDK-8271613 that is submitted by SAP folks who run it as part of all JDK tests, I guess.

But nevertheless, I think speeding up the test would be even more useful for those who run this test by hand: waiting for 12 minutes instead of 1.5 hours ;)

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PR: https://git.openjdk.java.net/jdk/pull/5358