RFR: 8366476: Test gc/z/TestSmallHeap.java fails OOM with many NUMA nodes [v2]

[Joel Sikström]

On Tue, 2 Sep 2025 01:44:33 GMT, SendaoYan <syan at openjdk.org> wrote:

>> Hi all,
>> 
>>   The PR [JDK-8359683](https://bugs.openjdk.org/browse/JDK-8359683) added NUMA-Aware Relocation for ZGC, it's optimized for the majority of NUMA workloads, but the cost is requiring more headroom in terms of heap memory. This PR add extra JVM option "-XX:-UseNUMA" to make this test run normally.
>> 
>> Test-fix only, change has been verified locally, no risk.
>
> SendaoYan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   update comment "Disable NUMA to avoid potential OOM after JDK-8359683"

Marked as reviewed by jsikstro (Committer).

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PR Review: https://git.openjdk.org/jdk/pull/27019#pullrequestreview-3175130946