Integrated: 8329223: Parallel: Parallel GC resizes heap even if -Xms = -Xmx

[Zhengyu Gu]

On Thu, 28 Mar 2024 19:21:01 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> Parallel GC resizes old gen even when setting -Xms == -Xmx. 
> 
> During GC argument setup, it always set `MinOldSize = GenAlignment` and does not make any adjustment when `-Xms == -Xmx`, while does the adjustment for young gen [here](https://github.com/openjdk/jdk/blob/master/src/hotspot/share/gc/shared/genArguments.cpp#L250)

This pull request has now been integrated.

Changeset: aca1e836
Author:    Zhengyu Gu <zgu at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/aca1e8365bf0f64bf18caf798bbca1d25b3c4117
Stats:     11 lines in 1 file changed: 6 ins; 3 del; 2 mod

8329223: Parallel: Parallel GC resizes heap even if -Xms = -Xmx

Reviewed-by: ayang, gli

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PR: https://git.openjdk.org/jdk/pull/18539