[jira] [Commented] (MESOS-2154) Port CFS quota support to Docker Containerizer

["Steve Niemitz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-2154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15051749#comment-15051749 ] 

Steve Niemitz commented on MESOS-2154:
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The issue with only setting the CFS quota on the command line is that the quota can change over time as tasks add/leave the container.  Correctly supporting CFS requires directly updating the cgroup to handle this case, the same way cpu.shares is handled.

We've been running a version of mesos w/ a custom CFS patch [1] applied for ~6 months now, I had a review open a long time ago that I gave up on trying to get upstream, but I think I'm going to revisit it now.

[1] https://reviews.apache.org/r/33174/diff/2/

> Port CFS quota support to Docker Containerizer
> ----------------------------------------------
>
>                 Key: MESOS-2154
>                 URL: https://issues.apache.org/jira/browse/MESOS-2154
>             Project: Mesos
>          Issue Type: Improvement
>          Components: docker, isolation
>    Affects Versions: 0.21.0
>         Environment: Linux (Ubuntu 14.04.1)
>            Reporter: Andrew Ortman
>            Assignee: haosdent
>            Priority: Minor
>
> Port the CFS quota support the Mesos Containerizer has to the Docker Containerizer. Whenever the --cgroup_enable_cfs flag is set, the Docker Containerizer should update the cfs_period_us and cfs_quota_us values to allow hard CPU capping on the container. 
> Current workaround is to pass those values as LXC configuration parameters



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