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https://issues.apache.org/jira/browse/YARN-3122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14312262#comment-14312262
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Anubhav Dhoot commented on YARN-3122:
-------------------------------------
On a 4 proc machine the parent process 1778 has 3 sub processes (1779, 1780,
1781) each eating up 1 core. Thus ProcfsBasedProcessTree returns close to 25 %
usage for 1779 and close to 75% for the parent process tree 1778
> Metrics for container's actual CPU usage
> ----------------------------------------
>
> Key: YARN-3122
> URL: https://issues.apache.org/jira/browse/YARN-3122
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Affects Versions: 2.6.0
> Reporter: Anubhav Dhoot
> Assignee: Anubhav Dhoot
> Attachments: YARN-3122.prelim.patch, YARN-3122.prelim.patch
>
>
> It would be nice to capture resource usage per container, for a variety of
> reasons. This JIRA is to track CPU usage.
> YARN-2965 tracks the resource usage on the node, and the two implementations
> should reuse code as much as possible.
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