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Posted to yarn-issues@hadoop.apache.org by "Chris Nauroth (JIRA)" <ji...@apache.org> on 2016/03/01 21:23:18 UTC

[jira] [Updated] (YARN-4681) ProcfsBasedProcessTree should not calculate private clean pages

     [ https://issues.apache.org/jira/browse/YARN-4681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Nauroth updated YARN-4681:
--------------------------------
    Assignee: Jan Lukavsky

> ProcfsBasedProcessTree should not calculate private clean pages
> ---------------------------------------------------------------
>
>                 Key: YARN-4681
>                 URL: https://issues.apache.org/jira/browse/YARN-4681
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>    Affects Versions: 2.6.0, 2.7.0
>            Reporter: Jan Lukavsky
>            Assignee: Jan Lukavsky
>         Attachments: YARN-4681.patch, YARN-4681.patch
>
>
> ProcfsBasedProcessTree in Node manager calculates memory used by a process tree by parsing {{/etc/<pid>/smaps}}, where it calculates {{min(Pss, Shared_Dirty) + Private_Dirty + Private_Clean}}. Because not {{mlocked}} private clean pages can be reclaimed by kernel, this should be changed to calculating only {{Locked}} pages instead.



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