RFR: 8339300: CollectorPolicy.young_scaled_initial_ergo_vm gtest fails on ppc64 based platforms

[Martin Doerr]

On Mon, 2 Sep 2024 12:46:27 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> We currently fail in CollectorPolicy.young_scaled_initial_ergo_vm after [JDK-8258483](https://bugs.openjdk.org/browse/JDK-8258483) came in.
> AIX / Linux ppc64le show this error :
> 
> [ RUN ] CollectorPolicy.young_scaled_initial_ergo_vm
> test/hotspot/gtest/gc/shared/test_collectorPolicy.cpp:122: Failure
> Expected equality of these values:
>   expected
>     Which is: 44695552
>   NewSize
>     Which is: 41943040
> 
> test/hotspot/gtest/gc/shared/test_collectorPolicy.cpp:78: Failure
> Expected: checker->execute() doesn't generate new fatal failures in the current thread.
>   Actual: it does.
> 
> [ FAILED ] CollectorPolicy.young_scaled_initial_ergo_vm (0 ms)
> 
> So the decrease form 80M to 40M was too much for these platforms (they slightly differ in ergo/startup behavior).

LGTM.

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Marked as reviewed by mdoerr (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/20820#pullrequestreview-2277598668