[jdk17u-dev] Integrated: 8279856: Parallel: Use PreservedMarks to record promotion-failed objects

Tue Nov 21 13:38:11 UTC 2023

On Fri, 17 Nov 2023 11:38:11 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

> This backports (JDK-8279856)[https://bugs.openjdk.org/browse/JDK-8279856] to jdk17u. The change fixes a considerable performance problem in Parallel GC. The original change has baked in mainline since JDK19 and has not accrued any bug-tail, yet.
> 
> Testing:
>  - [x] hotspot_gc
>  - [x] tier1 (+UseParallelGC)
>  - [x] tier2 (+UseParallelGC)
>  - [x] tier3 (+UseParallelGC)
>  - [x] tier4 (+UseParallelGC)

This pull request has now been integrated.

Changeset: 40c29f7d
Author:    Roman Kennke <rkennke at openjdk.org>
URL:       https://git.openjdk.org/jdk17u-dev/commit/40c29f7d80b5b67718ce071722bd7cfaecdf9495
Stats:     24 lines in 5 files changed: 12 ins; 8 del; 4 mod

8279856: Parallel: Use PreservedMarks to record promotion-failed objects

Backport-of: 16ec47d5e5bf129fc0910358464ab62bf6ce7ed8

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PR: https://git.openjdk.org/jdk17u-dev/pull/1964