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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:

    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

> 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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