RFR (XXS): 8244714: G1 young gen sizer allows zero young gen with huge -XX:NewRatio

stefan.johansson at oracle.com stefan.johansson at oracle.com
Tue May 12 13:56:48 UTC 2020


Hi Thomas,

On 2020-05-12 15:28, Thomas Schatzl wrote:
> Hi all,
> 
>    can I have reviews for this change that regularizes behavior of the 
> young gen sizer?
> 
> In particular, if NewRatio is exclusively used for sizing the young gen 
> sizer may return 0 for minimum size if NewRatio is huge. This is 
> different to all other sizing modes.
> 
> There is no particular impact from what I understand from tests as the 
> heuristics will force a larger than zero sized eden later if possible.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8244714
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8244714/webrev/
Looks good and trivial,
Stefan

> Testing:
> hs-tier1-3
> 
> Thanks,
>    Thomas


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