RFR: 8368668: Several vmTestbase/vm/gc/compact tests timed out on large memory machine [v3]

[Leonid Mesnik]

On Fri, 26 Sep 2025 06:36:39 GMT, SendaoYan <syan at openjdk.org> wrote:

>> Hi all,
>> 
>> Several vmTestbase/vm/gc/compact tests was observed timed out after JDK-8260555 set the default jtreg timeout factor to 1. The test log shows that test detect 448 threads and 30GB(32178700288) memory. Seems that this stress make tests can not finish in 120s.
>> 
>> The default timeout factor ie set to 4 before JDK-8260555, after JDK-8260555 the default timeout factor is set to 1, and this cause these stress tests run timed out. If we do not change the stress mode for these tests, should we increase the default timeout value from 120s to 480s, this will make these tests run normally for most of the machines and make these tests more generally.
>
> SendaoYan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove -Xmx2G and add timeout/480

Thanks for update. The tests might be optimized later if needed.

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Marked as reviewed by lmesnik (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27488#pullrequestreview-3273180443