[jdk17u-dev] RFR: 8318986: Improve GenericWaitBarrier performance [v2]

[Aleksey Shipilev]

On Wed, 29 May 2024 11:55:36 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Clean backport to drastically improve safepoint performance under heavy load, fixing regression between JDK 11 and JDK 17.
>> 
>> Additional testing:
>>  - [x] Ad-hoc performance runs, expected improvements
>>  - [x] MacOS AArch64 server fastdebug, `tier{1,2,3}`
>
> 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 three additional commits since the last revision:
> 
>  - Merge branch 'master' into JDK-8318986-generic-wait-barrier
>  - Merge branch 'master' into JDK-8318986-generic-wait-barrier
>  - Backport 30462f9da40d3a7ec18fcf46e2154fabb5fd4753

Re-ran `tier{1,2,3}` on MacOS AArch64, looks fine.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/2041#issuecomment-2138868424