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Re: Usage is more then Limits



Agree with Clayton.

To debug further, would need to see:

Pod spec as persisted
docker inspect output for suspect container
cpu and memory cgroup values in sys fs of suspect container 

Feel free to reply directly if you need more assistance.

Thanks,

On Tue, May 23, 2017 at 2:01 PM Clayton Coleman <ccoleman redhat com> wrote:
CPU request corresponds to fair share CPU - if you cross over your limit you use the slack capacity.  Memory request determines most scheduling (we place you on a node if it has at least request memory available).  Memory limit is a hard limit, and CPU limit is a hard limit (if you have 0.1 core limit, you can never run more than 10% of CPU time).

When you use overcommit, we rewrite either limit or requests.  If you see CPU or memory above limit, that's definitely a bug.

On Tue, May 23, 2017 at 1:15 PM, Srinivas Naga Kotaru (skotaru) <skotaru cisco com> wrote:

Can someone comment on this?

 

 

-- 

Srinivas Kotaru

 

From: Srinivas Naga Kotaru <skotaru cisco com>
Date: Wednesday, May 10, 2017 at 12:25 PM
To: dev <dev lists openshift redhat com>
Subject: Usage is more then Limits

 

Hi

 

Is it possible Usage is more than Limits? Observed some nodes has more Usage then allowed Limits in our cluster. We have a Quota’s implemented, LimitRagen enabled per project (Defaults Limits and Requests) and Cluster overcommit % specified (10 % CPU Limits and 25 % Memory Limits as requests for scheduling to take place)

 

It is my understanding based on above data, is requets always 1/10 fo CPU and ¼ of memory and Limits can go as much specified by clients but Usage should be less then Limits as clients can’t go beyound Limits.

 

 

-- 

Srinivas Kotaru


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