RFR: 8323730: Tweak TestZAllocationStallEvent.java to allocate smaller objects

[Axel Boldt-Christmas]

On Mon, 15 Jan 2024 14:23:59 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> This is a minor tweak to TestZAllocationStallEvent.java in an attempt to lower the risk of hitting OOME while provoking allocation stalls.
> 
> Tested by running tier5, where the test has been found to very intermittently cause problems.

Looks good. 

If this still causes OOME issues we can consider try catch inside the loop.

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Marked as reviewed by aboldtch (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17426#pullrequestreview-1823375708