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From "Niklas Quarfot Nielsen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-2251) High CPU usage of mesos-slave when running many tasks
Date Fri, 23 Jan 2015 03:11:36 GMT

    [ https://issues.apache.org/jira/browse/MESOS-2251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14288665#comment-14288665
] 

Niklas Quarfot Nielsen commented on MESOS-2251:
-----------------------------------------------

I could verify this behavior (on Mac OS X - [~drexin] did you verify on Linux as well?).

I ran a profiler and all the time is spent in mesos::internal::slave::PosixCpuIsolatorProcess::usage(mesos::ContainerID
const&)

> High CPU usage of mesos-slave when running many tasks
> -----------------------------------------------------
>
>                 Key: MESOS-2251
>                 URL: https://issues.apache.org/jira/browse/MESOS-2251
>             Project: Mesos
>          Issue Type: Bug
>          Components: slave
>    Affects Versions: 0.22.0
>            Reporter: Dario Rexin
>
> Starting many tasks (in my case 80) on a single slave leads to extremely high cpu usage
of the slave process. On a 4 core (4GHz Core i7 8 Threads) I observed up to 210% CPU usage.
The CPU usage only goes down, when the tasks are stoppped.



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