RFR: 8266422: GC ergo tests should not write cores

[Stefan Johansson]

On Mon, 3 May 2021 07:28:02 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> Hi,
> 
> unrelated crashes in GC tests showed timeouts and large core files on AIX, which unfortunately has no concept of committing memory - reserved memory counts toward the commit charge right away and hence are reflected in core file size.
> 
> Therefore I would like to run these tests without cores. Note that it is not my intention to fix up all potential tests which do this, which would be a much larger task, or would require a change at a lower layer (e.g. always pass -CreateCoredumpOnCrash to createJavaProcessBuilder).
> 
> Thanks, Thomas

Would it make sense to only add `-XX:-CreateCoredumpOnCrash` when on AIX? We have `Platform.isAix()` which could be used to check this. Or do you see a value in always adding this to the tests in question?

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PR: https://git.openjdk.java.net/jdk/pull/3836