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Sylvain Lebresne commented on CASSANDRA-10425:
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I agree that we can make recommendation on that somewhere, but I also think
that auto-selecting that kind of things is a step too far. If you upgrade your
node to have more memory and the GC setting change, that violates the principle
of least surprises in particular.
> Autoselect GC settings depending on system memory
> -------------------------------------------------
>
> Key: CASSANDRA-10425
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10425
> Project: Cassandra
> Issue Type: Improvement
> Components: Configuration
> Reporter: Jonathan Shook
>
> 1) Make GC modular within cassandra-env
> 2) For systems with 32GB or less of ram, use the classic CMS with the
> established default settings.
> 3) For systems with 48GB or more of ram, use 1/2 or up to 32GB of heap with
> G1, whichever is lower.
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