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From "Varun Vasudev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2531) CGroups - Admins should be allowed to enforce strict cpu limits
Date Wed, 10 Sep 2014 18:57:33 GMT
Varun Vasudev created YARN-2531:
-----------------------------------

             Summary: 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


>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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