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Posted to yarn-issues@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2013/05/01 09:08:17 UTC
[jira] [Commented] (YARN-600) Hook up cgroups CPU settings to the
number of virtual cores allocated
[ https://issues.apache.org/jira/browse/YARN-600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646435#comment-13646435 ]
Sandy Ryza commented on YARN-600:
---------------------------------
I don't believe anything special happens when it's not enabled.
> Hook up cgroups CPU settings to the number of virtual cores allocated
> ---------------------------------------------------------------------
>
> Key: YARN-600
> URL: https://issues.apache.org/jira/browse/YARN-600
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager, scheduler
> Affects Versions: 2.0.3-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
>
> YARN-3 introduced CPU isolation and monitoring through cgroups. YARN-2 and introduced CPU scheduling in the capacity scheduler, and YARN-326 will introduce it in the fair scheduler. The number of virtual cores allocated to a container should be used to weight the number of cgroups CPU shares given to it.
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