[jdk11u-dev] RFR: 8347129: cpuset cgroups controller is required for no good reason

[Voznia Anton]

On Thu, 13 Nov 2025 14:17:28 GMT, Severin Gehwolf <sgehwolf at openjdk.org> wrote:

>> @jerboaa thank you for the note.
>> 
>> In my case the test failed `TestCPUAwareness.java` because of
>> "java.lang.RuntimeException: 'active_processor_count.*1' missing from stdout/stderr "
>> 
>> The test expects one active processor count, but the actual value is two:
>> [0.002s][trace][os,container] CgroupSubsystem::active_processor_count (cached): 2
>> 
>> Does the cpushare affect the active processor count number?
>
>> Does the cpushare affect the active processor count number?
> 
> For JDK 17 and below it does, yes. It's using `-XX:+UseContainerCpuShares`.

@jerboaa I see, thanks

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PR Comment: https://git.openjdk.org/jdk11u-dev/pull/3109#issuecomment-3528062530