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https://issues.apache.org/jira/browse/CASSANDRA-8150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14573179#comment-14573179
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Anuj Wadehra commented on CASSANDRA-8150:
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As 2.0.15 is the Production ready version of Cassandra,can you please confirm
whether G1 Collector has been thoroughly tested on 2.0.x ? Or should Production
users on 2.0.x stick with CMS? 2.1 and 3.0 are still not production ready and
default JVM settings for 2.0.x never worked for us:(
> Revaluate Default JVM tuning parameters
> ---------------------------------------
>
> Key: CASSANDRA-8150
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8150
> Project: Cassandra
> Issue Type: Improvement
> Components: Config
> Reporter: Matt Stump
> Assignee: Ryan McGuire
> Attachments: upload.png
>
>
> It's been found that the old twitter recommendations of 100m per core up to
> 800m is harmful and should no longer be used.
> Instead the formula used should be 1/3 or 1/4 max heap with a max of 2G. 1/3
> or 1/4 is debatable and I'm open to suggestions. If I were to hazard a guess
> 1/3 is probably better for releases greater than 2.1.
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