RFR: 8350758: G1: Use actual last prediction in accumulated survivor rate prediction too

[Albert Mingkun Yang]

On Wed, 26 Feb 2025 11:51:31 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this fix to recent JDK-8349906 to use the current
> survivor rate in the accumulated survivor rate for initializing newly allocated entries as well.
> 
> Testing: gha
> 
> Thanks,
>   Thomas

src/hotspot/share/gc/g1/g1SurvRateGroup.cpp line 76:

> 74:       if (i == 0) {
> 75:         _surv_rate_predictors[i]->add(InitialSurvivorRate);
> 76:         _accum_surv_rate_pred[i] = 0.0;

Should this be updated as well?

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PR Review Comment: https://git.openjdk.org/jdk/pull/23795#discussion_r1973350393