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From "Jan Lukavsky (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4681) ProcfsBasedProcessTree should not calculate private clean pages
Date Wed, 10 Feb 2016 09:32:18 GMT

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

Jan Lukavsky updated YARN-4681:
-------------------------------
    Attachment: YARN-4681.patch

Added backward compatibility, removed some warnings.

> 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
>         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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