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https://issues.apache.org/jira/browse/YARN-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14135742#comment-14135742
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Vinod Kumar Vavilapalli commented on YARN-2531:
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This looks good to me. The test was a little hard to track given the many
knobs, but I understand it now. So, we now have
{{yarn.nodemanger.linux-container-executor.cgroups.strict-resource-usage}} - a
boolean for admins to override app-configs and enforce/not-enforce strict
controls.
+1, checking this in.
> CGroups - Admins should be allowed to enforce strict cpu limits
> ---------------------------------------------------------------
>
> Key: YARN-2531
> URL: https://issues.apache.org/jira/browse/YARN-2531
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Varun Vasudev
> Assignee: Varun Vasudev
> Attachments: apache-yarn-2531.0.patch
>
>
> From YARN-2440 -
> {quote}
> The other dimension to this is determinism w.r.t performance. Limiting to
> allocated cores overall (as well as per container later) helps orgs run
> workloads and reason about them deterministically. One of the examples is
> benchmarking apps, but deterministic execution is a desired option beyond
> benchmarks too.
> {quote}
> It would be nice to have an option to let admins to enforce strict cpu limits
> for apps for things like benchmarking, etc. By default this flag should be
> off so that containers can use available cpu but admin can turn the flag on
> to determine worst case performance, etc.
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