RFR: 8236073: G1: Use SoftMaxHeapSize to guide GC heuristics [v8]

Wed Apr 9 07:56:37 UTC 2025

On Wed, 9 Apr 2025 07:24:43 GMT, Man Cao <manc at openjdk.org> wrote:

> > Last time this has been mentioned in the hotspot-gc-dev list has been [here](https://mail.openjdk.org/pipermail/hotspot-gc-dev/2025-February/051079.html). I remember giving multiple outlines to everyone involved earlier, each mentioning that `Min/MaxHeapFreeRatio` need to go away because it's in the way, so I was/am a bit surprised on this response.
> 
> Apology for overlooking previous mentions about `Min/MaxHeapFreeRatio`. Previous mentions were mostly inside responses to complicated issues, and I have hardly got the time to follow hotspot-gc-dev closely. To be honest, we didn't pay much attention to `Min/MaxHeapFreeRatio` before I started working on this PR.
> 
> I guess this is a good example that a one-pager doc/umbrella bug provides cleaner communication and additional values over email discussion, especially when one party already has a pretty detailed plan for how it should be done.

Don't worry, I should have been better with following up with that summary about thoughts/plans communicated so far somewhere publicly.

Let's go forward with that CR summarizing the respective (current) general direction.

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PR Comment: https://git.openjdk.org/jdk/pull/24211#issuecomment-2788687511