[jdk21u-dev] RFR: 8318986: Improve GenericWaitBarrier performance [v2]

[Aleksey Shipilev]

On Wed, 28 Feb 2024 19:17:06 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 pull request now contains one commit:
> 
>   Backport 30462f9da40d3a7ec18fcf46e2154fabb5fd4753

GHA failure in RISC-V build is infrastructural: [JDK-8326960](https://bugs.openjdk.org/browse/JDK-8326960).

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/70#issuecomment-1970675637