[jdk26] RFR: 8373086: Make isexceeded001.java more robust

[SendaoYan]

On Mon, 8 Dec 2025 07:54:59 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [4d696d0d](https://github.com/openjdk/jdk/commit/4d696d0d0ed523e3c99c68214586673913b1c7b5) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Albert Mingkun Yang on 5 Dec 2025 and was reviewed by Joel Sikström and Thomas Schatzl.
> 
> Thanks!

Change has been verified locally on linux-x64 by run the tests test/hotspot/jtreg/vmTestbase/nsk/monitoring/MemoryPoolMBean/isUsageThresholdExceeded/isexceeded00[1-5]/TestDescription.java. Thanks for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/28694#issuecomment-3635055881