RFR: 8343704: Bad GC parallelism with processing Cleaner queues [v4]

[Brent Christian]

On Wed, 13 Nov 2024 20:46:09 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Right, d'oh. The unavailability of `ArrayList.capacity()` is what gets us in this mess. I'll try to rewrite to just plain arrays.
>
> I pushed the array-based implementation, but ran out of time to properly test it. I'll circle back to it tomorrow. Review if you can, but it will probably have some touchups later.

Speaking of testing, with this level of change, perhaps a new (white box?) regtest is warranted.

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PR Review Comment: https://git.openjdk.org/jdk/pull/22043#discussion_r1841361873