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From "Jonathan Shook (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10425) Autoselect GC settings depending on system memory
Date Wed, 30 Sep 2015 18:32:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14938236#comment-14938236
] 

Jonathan Shook commented on CASSANDRA-10425:
--------------------------------------------

Consider adding some weightings for different levels of buffer-cache sensitivity in workload.

> Autoselect GC settings depending on system memory
> -------------------------------------------------
>
>                 Key: CASSANDRA-10425
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10425
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Config, Core
>            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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