RFR: 8283903: GetContainerCpuLoad does not return the correct result in share mode

[xpbob]

On Wed, 30 Mar 2022 03:17:23 GMT, Jie Fu <jiefu at openjdk.org> wrote:

>>> > In share mode, the process runs for a long time and the number of physical machine cores is large, making it easier to reappear.
>>> 
>>> So if we run long enough, the `getHostTotalCpuTicks0()` may return overflowed `hostTicks`, right?
>> 
>> GetHostTotalCpuTicks0 is correct
>> (GetHostTotalCpuTicks0() * containerCPUs)  will overflowed
>
>> GetHostTotalCpuTicks0 is correct
>> (GetHostTotalCpuTicks0() * containerCPUs) will overflowed
> 
> Okay.
> It makes sense for this case.
> 
> Maybe, there is no way to prevent the overflow of `hostTicks ` returned by `getHostTotalCpuTicks0()`.
> So the change looks good to me.
> Thanks.

Thanks for the reviews @DamonFool @dholmes-ora @jerboaa  @kevinjwalls

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PR: https://git.openjdk.java.net/jdk/pull/8028