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From "Craig W (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (MESOS-4586) Resources clarification in Mesos UI
Date Wed, 03 Feb 2016 19:06:39 GMT

    [ https://issues.apache.org/jira/browse/MESOS-4586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15130815#comment-15130815
] 

Craig W edited comment on MESOS-4586 at 2/3/16 7:06 PM:
--------------------------------------------------------

[~haosdent@gmail.com] Ah ok, if `Idle` means the same as `resources that could be offered`,
that's what I was looking for. I ran into a situation recently where `Idle` showed I had hundreds
of CPUs and thousands of GB's of memory, but when I tried to start 100 tasks that each needed
1 cpu and 8gb of memory, Marathon was stuck `waiting` as it wasn't getting resources offers
it could use.

I shutdown other tasks to free up more cpu/memory and then was able to start the 100 tasks
I mentioned. This is what led me to believe the `Idle` values weren't the actual "free" (as
in able to be offered) resources.


was (Author: codecraig):
[~haosdent@gmail.com] Ah ok, if `Idle` means is the same as `resources that could be offered`,
that's what I was looking for. I ran into a situation recently where `Idle` showed I had hundreds
of CPUs and thousands of GB's of memory, but when I tried to start 100 tasks that each needed
1 cpu and 8gb of memory, Marathon was stucking `waiting` as it wasn't getting resources offers
it could use.

I shutdown other tasks to free up more cpu/memory and then was able to start the 100 tasks
I mentioned. This is what led me to believe the `Idle` values weren't the actual "free" (as
in able to be offered) resources.

> Resources clarification in Mesos UI
> -----------------------------------
>
>                 Key: MESOS-4586
>                 URL: https://issues.apache.org/jira/browse/MESOS-4586
>             Project: Mesos
>          Issue Type: Improvement
>    Affects Versions: 0.26.0, 0.27.0
>            Reporter: Craig W
>
> On the Mesos UI under the "resources" section when it lists CPUs and Mem, 
> it seems to be calculated by sum up every executor cpu and memory statistics, which would
be less than <= "allocated" resources.
> On the page that displays information for a slave it shows the CPUs and Mem show used
and allocated.
> When I look at the Mesos UI front page, I was looking at "Idle" resources as the amount
of resources I have available for offers. However, that's not the case. It would be nice to
have it show the amount of "free" or "available" resources as well as "idle", so I can better
determine how many resources I actually have available for scheduling additional tasks.



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