RFR: 8367302: New test jdk/jfr/event/profiling/TestCPUTimeSampleQueueAutoSizes.java from JDK-8366082 is failing

[Johannes Bechberger]

On Thu, 18 Sep 2025 02:06:27 GMT, Andrei Pangin <apangin at openjdk.org> wrote:

>> This change hopefully fixes the test failures by making the test cases more resilient.
>
> test/jdk/jdk/jfr/event/profiling/TestCPUTimeSampleQueueAutoSizes.java line 99:
> 
>> 97:     }
>> 98: 
>> 99:     public static void main(String[] args) throws Exception {
> 
> A brief high-level explanation of what the test does would be useful.
> From what I understood, the test starts CPU time sampling with a short interval (1ms), temporarily disables processing of native samples to cause queue overflow, then enables it back to report lost samples. Repeats the cycle 5 times and verifies that the queue has grown by the time of the last iteration, thereby decreasing the amount of losses.

Almost. But I only check the loss. I'll use an updated version of your text.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27293#discussion_r2359312057