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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2835) Run server with `-XX:+AlwaysPreTouch` jvm flag
Date Thu, 03 Aug 2017 21:52:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113558#comment-16113558
] 

ASF GitHub Bot commented on ZOOKEEPER-2835:
-------------------------------------------

Github user afine commented on the issue:

    https://github.com/apache/zookeeper/pull/301
  
    I'm not sure if we should make this default configuration since it should increase startup
time and will only increase performance for users with larger memory requirements. Our current
default -XX args are pretty conservative and we don't really have any performance related
switches there. Perhaps we should document this as a recommendation rather than making this
default?


> Run server with `-XX:+AlwaysPreTouch` jvm flag
> ----------------------------------------------
>
>                 Key: ZOOKEEPER-2835
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2835
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: server
>    Affects Versions: 3.5.3
>            Reporter: Benedict Jin
>            Assignee: Benedict Jin
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> Add `-XX:+AlwaysPreTouch` jvm flag for server, let jvm through demand-zeroed way to allocate
memory once in place when the process started



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