RFR: 8333226: Regressions 2-3% in Compress ZGC after 8331253

Tue Jun 4 16:32:29 UTC 2024

On Mon, 3 Jun 2024 17:59:06 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> Revert [JDK-8331253](https://bugs.openjdk.org/browse/JDK-8331253) changes [#3383ad63](https://git.openjdk.org/jdk/commit/3383ad6397d5a2d8fb232ffd3e29a54e0b37b686) to avoid regression.
> And convert `nmethod::_skipped_instructions_size field` field to `int` type to address original JDK-8331253 issue.
> 
> Tested tier1-3,stress,xcomp and performance.
> 
> Note: You may see some regressions, but performance returns to state before  JDK-8331253. I may look again in a future on changes I did to calculated skipped instructions.

Looks good to me too.

> I may look again in a future on changes I did to calculated skipped instructions.

Do you plan to file an RFE for that?

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Marked as reviewed by thartmann (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19531#pullrequestreview-2096854523