[jira] Issue Comment Edited: (CASSANDRA-1968) Increase JVM young generation size

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-1968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12984752#action_12984752 ] 

Jonathan Ellis edited comment on CASSANDRA-1968 at 1/21/11 9:37 AM:
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Young gen collection always compacts (part of the reason it's a STW phase).

      was (Author: jbellis):
    Young gen compaction always compacts (part of the reason it's a STW phase).
  
> Increase JVM young generation size
> ----------------------------------
>
>                 Key: CASSANDRA-1968
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1968
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 0.7.0
>            Reporter: Brandon Williams
>            Assignee: Brandon Williams
>             Fix For: 0.7.1
>
>         Attachments: 1968.txt, 1968_v2.txt
>
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> Increasing the young generation size has a profound effect on performance and cpu utilization.  We should set it explicitly.

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