[jdk25] RFR: 8361827: [TESTBUG] serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java throws OutOfMemoryError

[Leonid Mesnik]

On Wed, 16 Jul 2025 06:24:16 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [cbb3d23e](https://github.com/openjdk/jdk/commit/cbb3d23e19a8a893bf2fbda03e7bda4f4b7a59a6) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository to jdk25.
> 
> 
> Test-fix only to improves test performance and stability. Change has been verified locally, no risk.
> 
> Thanks!

Changes requested by lmesnik (Reviewer).

test/hotspot/jtreg/serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java line 59:

> 57:     @BeforeEach
> 58:     void doGC() {
> 59:         System.gc();

The Systen.gc() might not trigger full GC.

While not tjust o restrict heap for this test? 256M should be enough.

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PR Review: https://git.openjdk.org/jdk/pull/26343#pullrequestreview-3026212575
PR Review Comment: https://git.openjdk.org/jdk/pull/26343#discussion_r2211166978