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From "Chi Hoang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-1662) Mesos doesn't limit swap
Date Thu, 18 Sep 2014 18:23:33 GMT

    [ https://issues.apache.org/jira/browse/MESOS-1662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14139289#comment-14139289
] 

Chi Hoang commented on MESOS-1662:
----------------------------------

awesome!  thanks!

> Mesos doesn't limit swap
> ------------------------
>
>                 Key: MESOS-1662
>                 URL: https://issues.apache.org/jira/browse/MESOS-1662
>             Project: Mesos
>          Issue Type: Bug
>          Components: isolation
>    Affects Versions: 0.19.1
>            Reporter: Andrew Forgue
>            Assignee: Anton Lindström
>             Fix For: 0.20.0
>
>
> When using control groups, mesos will limit memory usage, but if the CONFIG_MEMCG_SWAP
config option is enabled swap usage is not limited.
> This means that if a task that asked for 1G and allocated 4G, it will fill 3G of swap.
 The expected behavior is that the cgroup should have OOMed.  The control group key for limiting
both Memory+Swap is memory.memsw.limit_in_bytes (not memory.limit_in_bytes).  It looks like
CONFIG_MEMCG_SWAP showed up in Kernel 3.6.
> Mesos should limit swap+memory if possible.  I can't imagine when you'd want to limit
memory but not swap, but there may be some situations.



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