RFR: JDK-8030957 - AIX: Implement OperatingSystemMXBean.getSystemCpuLoad() and .getProcessCpuLoad() on AIX [v6]

[Suchismith Roy]

On Thu, 25 Sep 2025 09:13:58 GMT, Joachim Kern <jkern at openjdk.org> wrote:

>> Suchismith Roy has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 12 commits:
>> 
>>  - Merge branch 'openjdk:master' into cpuprocessload
>>  - Thread safety,struct and perfInit()
>>  - Thread safety,struct and perfInit()
>>  - Update ProblemList.txt
>>  - Merge branch 'master' into cpuprocessload
>>  - Merge branch 'master' into cpuprocessload
>>  - Update UnixOperatingSystem.c
>>  - Merge branch 'openjdk:master' into cpuprocessload
>>  - cleanup
>>  - system cpu load
>>  - ... and 2 more: https://git.openjdk.org/jdk/compare/86d6a2e0...46dcf313
>
> src/jdk.management/aix/native/libmanagement_ext/UnixOperatingSystem.c line 134:
> 
>> 132:             cpu_load = MAX(cpu_load, 0.0);
>> 133:             cpu_load = MIN(cpu_load, 1.0);
>> 134:             cpu_load = (user_diff + sys_diff) / delta_time;
> 
> Why is the sequence here different to the sequence in Java_com_sun_management_internal_OperatingSystemImpl_getCpuLoad0 ?

Thanks for catching this. Missed this detail for this method. Had kept the right logic in other one.  It does not get caught in the tests either!

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PR Review Comment: https://git.openjdk.org/jdk/pull/25332#discussion_r2379374478