RFR: 5641: Rule that looks at G1 MMU Information [v3]

[Henrik Dafgård]

On Wed, 7 Jun 2023 19:10:14 GMT, Alex Macdonald <aptmac at openjdk.org> wrote:

>> This PR addresses JMC-5641 [[0]](https://bugs.openjdk.org/browse/JMC-5641), in which it would be nice to have a rule that looks at g1mmu information. Specifically, the issue makes note that this rule should compare gcTime of pauses and check if the pause time is over the target.
>> 
>> Example result when okay:
>> ![g1mmu_okay](https://github.com/openjdk/jmc/assets/10425301/7b371027-d992-4d70-84fe-f8ad9ffb4088)
>> 
>> Example result when warning:
>> ![g1mmu_warning](https://github.com/openjdk/jmc/assets/10425301/15803bc4-2d4f-4e53-9944-c97347564e39)
>> 
>> [0] https://bugs.openjdk.org/browse/JMC-5641
>
> Alex Macdonald has updated the pull request incrementally with one additional commit since the last revision:
> 
>   run spotless:apply

Marked as reviewed by hdafgard (Reviewer).

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PR Review: https://git.openjdk.org/jmc/pull/488#pullrequestreview-1474787220