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Posted to issues@kylin.apache.org by "kangkaisen (JIRA)" <ji...@apache.org> on 2017/01/10 12:35:58 UTC

[jira] [Updated] (KYLIN-2379) Add UseCMSInitiatingOccupancyOnly to KYLIN_JVM_SETTINGS

     [ https://issues.apache.org/jira/browse/KYLIN-2379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

kangkaisen updated KYLIN-2379:
------------------------------
    Attachment: KYLIN-2379.patch

This is the patch.

> Add UseCMSInitiatingOccupancyOnly to KYLIN_JVM_SETTINGS
> -------------------------------------------------------
>
>                 Key: KYLIN-2379
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2379
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Tools, Build and Test
>    Affects Versions: v1.6.0
>            Reporter: kangkaisen
>            Assignee: kangkaisen
>            Priority: Minor
>         Attachments: KYLIN-2379.patch
>
>
> {{CMSInitiatingOccupancyFraction}} is only used for the 1st collection unless {{-XX:+UseCMSInitiatingOccupancyOnly}} is set.
> The reference linking:
> https://books.google.com.hk/books?id=aIhUAwAAQBAJ&pg=PA146&lpg=PA146&dq=UseCMSInitiatingOccupancyOnly&source=bl&ots=E51s7uZ1eH&sig=D9nGk_hJu0IQ7QFymCnoekDrWf4&hl=zh-CN&sa=X&ved=0ahUKEwiI2tnQl63RAhWLL48KHZ5tDzA4ChDoAQg5MAQ#v=onepage&q=UseCMSInitiatingOccupancyOnly&f=false
> https://blog.codecentric.de/en/2013/10/useful-jvm-flags-part-7-cms-collector/



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