Integrated: 8366781: Parallel: Include OS free memory in GC selection heuristics

[Albert Mingkun Yang]

On Wed, 3 Sep 2025 09:58:33 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Add a new condition checking if OS has enough free memory to commit/expand old-gen, which determines whether the upcoming GC should be young or full.
> 
> This is needed only when `UseAdaptiveSizePolicy` is on, because this is intended to avoid including extra OS-time in gc-pause-time tracking, used for young-gen resizing.
> 
> Test: tier1-3

This pull request has now been integrated.

Changeset: 91e1dcb1
Author:    Albert Mingkun Yang <ayang at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/91e1dcb1083cc8c451d2d169d7f2fdb51c1a158e
Stats:     37 lines in 1 file changed: 26 ins; 1 del; 10 mod

8366781: Parallel: Include OS free memory in GC selection heuristics

Reviewed-by: gli, iwalulya

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PR: https://git.openjdk.org/jdk/pull/27068