Integrated: 8364532: G1: In liveness tracing, print more significant digits for the liveness value

[Thomas Schatzl]

On Fri, 1 Aug 2025 11:45:35 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this small change that adds some more significant digits (3 in total) for the "liveness" column in collection set group logging.
> 
> E.g. see the emphasized columns that lack precision (it's more irritating with lots of lines showing single-digit values):
> 
> 50.707s][trace][gc,liveness] GC(13) ### groud-id num-regions gc-eff liveness remset type
> 50.707s][trace][gc,liveness] GC(13) ### (bytes/ms) % (bytes)
> 50.707s][trace][gc,liveness] GC(13) ### 1 70       0.0 *100* 3199208 Y
> 50.707s][trace][gc,liveness] GC(13) ### 2 51 5298129.5  *18* 1224072 M
> 50.707s][trace][gc,liveness] GC(13) ### 3  5 3223983.6  *31*  176648 M
> 50.707s][trace][gc,liveness] GC(13) ### 4  5 3022016.3  *32*  176648 M
> 
> 
> (This depends on PR#26591, so please look at that one first).
> 
> The change makes sure that three significant digits are printed.
> 
> Testing: manual review
> 
> Thanks,
>   Thomas

This pull request has now been integrated.

Changeset: 9439d763
Author:    Thomas Schatzl <tschatzl at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/9439d7630901d3e29141adf46bbe9284b86683f4
Stats:     7 lines in 3 files changed: 1 ins; 1 del; 5 mod

8364532: G1: In liveness tracing, print more significant digits for the liveness value

Reviewed-by: ayang, iwalulya

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PR: https://git.openjdk.org/jdk/pull/26595