[jdk17u-dev] RFR: 8280705: Parallel: Full gc mark stack draining should prefer to make work available to other threads [v3]

[Aleksey Shipilev]

On Tue, 15 Aug 2023 09:36:48 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Clean backport to match what G1 is also doing. The change was in mainline for more than a year without related issues.
>> 
>> Additional testing:
>>  - [x] Linux x86_64 fastdebug `tier1` with `-XX:+UseParallelGC`
>>  - [x] Linux x86_64 fastdebug `tier2` with `-XX:+UseParallelGC`
>>  - [x] Linux x86_64 fastdebug `tier3` with `-XX:+UseParallelGC`
>
> Aleksey Shipilev 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 four additional commits since the last revision:
> 
>  - Merge branch 'master' into JDK-8280705-parallel-fullgc-work
>  - Merge branch 'master' into JDK-8280705-parallel-fullgc-work
>  - Merge branch 'master' into JDK-8280705-parallel-fullgc-work
>  - Backport bdda43e066b8da0ebf9a8ef2f843eabb230f0800

Yeah, I do not want to integrate at this time. I think this is a performance regression. I kept this PR as the reminder to myself that I need to reproduce this in mainline. I'll remove the tags.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/1521#issuecomment-1766685296