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Posted to issues@mesos.apache.org by "Drew Robb (JIRA)" <ji...@apache.org> on 2015/09/04 01:05:49 UTC

[jira] [Commented] (MESOS-2635) Web UI Display Bug when starting lots of tasks with small cpu value

    [ https://issues.apache.org/jira/browse/MESOS-2635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14729994#comment-14729994 ] 

Drew Robb commented on MESOS-2635:
----------------------------------

I've seen this often. I think it is reproducible when frameworks or offers have allocated a fractional amount of CPU resources each, so that there is floating point error in the arithmetic.

> Web UI Display Bug when starting lots of tasks with small cpu value
> -------------------------------------------------------------------
>
>                 Key: MESOS-2635
>                 URL: https://issues.apache.org/jira/browse/MESOS-2635
>             Project: Mesos
>          Issue Type: Bug
>          Components: webui
>    Affects Versions: 0.22.0
>            Reporter: Lukas Loesche
>            Priority: Minor
>         Attachments: Screen Shot 2015-04-17 at 18.53.54.png
>
>
> During Marathon scale testing we encountered a display bug where the Mesos Web UI would show -4.064304448547773e-11 Idle CPUs in the Resources overview.
> To reproduce, we started:
>          "cmd": "python -m SimpleHTTPServer $PORT0",
>          "cpus": 0.0001,
>          "instances": 2000,
>          "mem": 32,



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