[lworld] RFR: 8364464: [lworld] GCs do not process flat arrays by chunks [v2]

[Axel Boldt-Christmas]

On Fri, 20 Feb 2026 12:47:05 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Hi,
>> 
>> Please review this change to add Array Chunking for flatArrays with oops across the G1, Parallel, and Serial GCs
>> 
>> This update addresses the regression reported in [JDK-8373029](https://bugs.openjdk.org/browse/JDK-8373029).
>> 
>> Results after the change:
>> 
>> 
>> jdk/bin/java BigArray 80000000
>> 
>> real    0m35.790s
>> user    5m38.042s
>> sys     0m1.666s
>> 
>> 
>> 
>> jdk/bin/java --enable-preview BigArray 80000000
>> 
>> real    0m18.865s
>> user    2m57.155s
>> sys     0m1.799s
>> 
>> 
>> Test: Tier 1-2 with` --enable-preview`
>
> Ivan Walulya has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - use uintptr_t
>  - Axel Review

Marked as reviewed by aboldtch (Committer).

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PR Review: https://git.openjdk.org/valhalla/pull/2142#pullrequestreview-3831861651