RFR: 8324755: Enable parallelism in vmTestbase/gc/gctests/LargeObjects tests

[Leonid Mesnik]

On Tue, 16 Apr 2024 12:11:55 GMT, Soumadipta Roy <duke at openjdk.org> wrote:

> The commit includes changes to unblock parallelism in vmTestbase/gc/gctests/LargeObjects tests.
> 
> Below are the before and after run comparisons on AL2:
> 
> # Fastdebug
> before: 7985.84s user 417.77s system 498% cpu 28:06.25 total
> after: 2503.22s user 48.65s system 606% cpu 7:00.69 total
> 
> # Release
> before: 1063.25s user 45.87s system 125% cpu 14:42.10 total
> after: 1077.70s user 45.71s system 481% cpu 3:53.28 total

Marked as reviewed by lmesnik (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/18798#pullrequestreview-2007002495