RFR: 8355372: GenShen: Test gc/shenandoah/generational/TestOldGrowthTriggers.java fails with UseCompactObjectHeaders enabled

[William Kemper]

On Mon, 28 Apr 2025 07:04:28 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> Add a test case for `-XX:+UseCompactObjectHeaders`, increase pressure on old generation. I ran the test (which includes a compact object headers case now) fifty times without failure.
>
> Hi @earthling-amzn  I added your PR to our build/test queue, let's see if the issues we observed go away on all platforms!

@MBaesken - thank you! Please let us know how it goes. 

@ysramakrishna - I wanted to increase pressure specifically on the old generation. I'm not sure reducing the heap size alone would do that. As you point out, the cases in the switch statement do look a bit silly now. I'll make the change you suggested.

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PR Comment: https://git.openjdk.org/jdk/pull/24888#issuecomment-2836708777