RFR: 8343189: [REDO] JDK-8295269 G1: Improve slow startup due to predictor initialization [v2]

[Stefan Johansson]

On Tue, 5 Nov 2024 09:50:15 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this redo of [JDK-8295269](https://bugs.openjdk.org/browse/JDK-8295269) G1: Improve slow startup due to predictor initialization. The cause are issues with the `runtime/cds/DeterministicDump.java` test, that is currently being fixed in #21871.
>> 
>> There has been no change in these changes.
>> 
>> Testing: running a few thousand times with the fixed `runtime/cds/DeterministicDump.java` test
>> 
>> Thanks,
>>   Thomas
>
> Thomas Schatzl 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 two additional commits since the last revision:
> 
>  - Merge branch 'master' into 8343189-redo-slow-startup
>  - Revert "8343086: [BACKOUT] JDK-8295269 G1: Improve slow startup due to predictor initialization"
>    
>    This reverts commit f1cc890ddfe2e472cf786856dc7d01645f61b054.

Marked as reviewed by sjohanss (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/21876#pullrequestreview-2423166378