RFR: 8323791: Parallel: Using non-atomic for live bytes update during Full GC [v4]

[Thomas Schatzl]

On Mon, 29 Jan 2024 15:19:47 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Simple optimization to avoid atomic-operation during Full GC marking.
>> 
>> Test: Full GC pause length shows ~1% regresion when using single gc-thread and ~20% improvement when using multiple gc-threads using the attached program.
>
> Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:
> 
>   pgc-fullgc-livebyte

Already noticed, will look into it. Thanks for trying it out.

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PR Comment: https://git.openjdk.org/jdk/pull/17442#issuecomment-1936041095