RFR: 8318986: Improve GenericWaitBarrier performance [v5]

[Aleksey Shipilev]

On Mon, 13 Nov 2023 20:14:25 GMT, Claes Redestad <redestad at openjdk.org> wrote:

> OK, I had already submitted a set across all platforms, but the results on linux will serve as a good check up on the generic vs futex impl. Do you intend to switch back before integration or is the intent to integrate and evaluate if it's on par then make a go/no-go decision later?

The intent to leave futex implementation enabled for Linux. Maybe we would do a series of touchups there. Generic implementation just tries to do what futex implementation is already doing well.

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PR Comment: https://git.openjdk.org/jdk/pull/16404#issuecomment-1809764047