RFR: 8331117: [PPC64] secondary_super_cache does not scale well

[Martin Doerr]

On Thu, 23 May 2024 14:11:36 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> PPC64 implementation of [JDK-8180450](https://bugs.openjdk.org/browse/JDK-8180450). Please review!
> I noticed that `r_array_length` is sometimes 0 and I don't see code for that on x86. Any idea?
> How can we verify it? By comparing the performance using the micro benchmarks?

@theRealAph: It would be great if you could take a look and see if you can spot any bug. Especially, I wonder why `r_array_length` happens to be 0 in some cases, but x86 doesn't check.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/19368#issuecomment-2129071450