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From "Ahmed Bashir (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-5361) Enable ThreadLocal allocation in the JVM
Date Fri, 12 Apr 2013 05:03:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13629795#comment-13629795
] 

Ahmed Bashir edited comment on CASSANDRA-5361 at 4/12/13 5:01 AM:
------------------------------------------------------------------

Incidentally we've operated with this option enabled for a few months now and have observed
reduced latency as well
                
      was (Author: abashir):
    Incidentally we've operated with this option enabled for some a few months now and have
observed reduced latency as well
                  
> Enable ThreadLocal allocation in the JVM
> ----------------------------------------
>
>                 Key: CASSANDRA-5361
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5361
>             Project: Cassandra
>          Issue Type: Improvement
>         Environment: JDK 6
>            Reporter: T Jake Luciani
>            Assignee: T Jake Luciani
>             Fix For: 1.1.11, 1.2.4
>
>
> Adding -XX:+UseTLAB to cassandra-env.sh yields a ~15% read performance boost.
> Works with usual stress tool but also in our production.
> It enables thread local allocation of new objects which makes sense for SEDA based systems.

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