[jdk17u-dev] RFR: 8282484: G1: Predicted old time in log always zero [v2]

[jyma22]

On Mon, 17 Nov 2025 23:03:07 GMT, jyma22 <duke at openjdk.org> wrote:

>> Hi all,
>> 
>> This pull request contains a backport of commit [d4d1fbc2](https://github.com/openjdk/jdk/commit/d4d1fbc27a2382d8d9545b7bf672cdcc81654404) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
>> 
>> The commit being backported was authored by Thomas Schatzl on Mar 3, 2022 and was reviewed by Albert Mingkun Yang and Ivan Walulya.
>> 
>> This PR depends on [pr/3992](https://github.com/openjdk/jdk17u-dev/pull/3992), so the target would be changed from pr/3992 to master once pr/3992 is approved and merged.
>> 
>> Testing: jtreg 1-3 gha
>> 
>> Thanks!
>
> jyma22 has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase.

Fix Request 17u

Backporting this patch fixes the log output to accurately report the expected time required to process the initial set of old gen regions.
Path applies cleanly to 17u, but requires [JDK-8306444](https://bugs.openjdk.org/browse/JDK-8306444) to be applied first through [pr/3992](https://github.com/openjdk/jdk17u-dev/pull/3992).
Included test passes. Ran tier1-3.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/3993#issuecomment-3559342184