RFR: 8354894: java/lang/Thread/virtual/Starvation.java timeout on server with high CPUs

[Jaikiran Pai]

On Mon, 29 Sep 2025 08:52:04 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> 
> We observed java/lang/Thread/virtual/Starvation.java intermittent timed out on server with many CPU core number. The more CPU core number the 'runTest' will create more pinned virtual threads. This PR compute an iteration count which divide the CPU core number will make test run passed steady on server with high CPUs.
> 
> Before apply the proposed patch, test run finish 257 seconds, after apply the proposed patch test run finish 1.2 seconds on the 2 sockets system with Intel(R) Xeon(R) Platinum 8480+. So I remove the 'timeout=800', I think the default timeout 120 will be enough.

Hello @sendaoYan, the change looks OK to me.

Since the change also removes the timeout value from this test, please give a day or so to have this run in our CI to make sure there aren't any intermittent failures.

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Marked as reviewed by jpai (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27543#pullrequestreview-3283022510