RFR: 8325553: Parallel: Use per-marker cache for marking stats during Full GC [v4]

[Thomas Schatzl]

On Fri, 23 Feb 2024 15:43:17 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Add cache to avoid too much contentious writes to global marking stats.
>> 
>> Test: tier1-6; using the attached bm, ~30% reduction in pause-time is observed. Only marginal improvement (probably just noise) is observed in BigRamTester.
>
> Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:
> 
>  - serial-flush
>  - Merge branch 'master' into pgc-full-gc-cache
>  - review
>  - Merge branch 'master' into pgc-full-gc-cache
>  - review
>  - Merge branch 'master' into pgc-full-gc-cache
>  - pgc-full-gc-cache

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/17788#pullrequestreview-1901166692