[lworld] RFR: 8369530: [lworld] Improve execution time of compiler tests

[Damon Fenacci]

On Tue, 28 Oct 2025 14:52:40 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> Have you also played around with using Java threads instead (i.e. a TestFramework instance per thread that adds the scenario flags)?

Not yet. For this fix I think it would be anyway better to let JTReg handle the different scenario process so that they can potentially be run on different machines. I have created [JDK-8370315](https://bugs.openjdk.org/browse/JDK-8370315) on mainline to look into it and also see if/when multiple threads can be beneficial.

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PR Comment: https://git.openjdk.org/valhalla/pull/1708#issuecomment-3457080005