You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@cassandra.apache.org by "Matt Stump (JIRA)" <ji...@apache.org> on 2014/11/21 18:35:35 UTC

[jira] [Updated] (CASSANDRA-8150) Revaluate Default JVM tuning parameters

     [ https://issues.apache.org/jira/browse/CASSANDRA-8150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Stump updated CASSANDRA-8150:
----------------------------------
    Summary: Revaluate Default JVM tuning parameters  (was: Simplify and enlarge new heap calculation)

> 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: Brandon Williams
>         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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)