[Devel] Re: [ckrm-tech] [patch00/05]: Containers(V2)- Introduction

Chandra Seetharaman sekharan at us.ibm.com
Wed Sep 20 12:35:23 PDT 2006


On Wed, 2006-09-20 at 12:25 -0700, Paul Menage wrote:
> On 9/20/06, Chandra Seetharaman <sekharan at us.ibm.com> wrote:
> >
> > We had this discussion more than 18 months back and concluded that it is
> > not the right thing to do. Here is the link to the thread:
> 
> Even if the resource control portions aren't totally compatible,
> having two separate process container abstractions in the kernel is
> sub-optimal, both in terms of efficiency and userspace management. How
> about splitting out the container portions of cpuset from the actual
> resource control, so that CKRM/RG can hang off of it too? Creation of
> a cpuset or a resource group would be driven by creation of a
> container; at fork time, a task inherits its parent's container, and
> hence its cpuset and/or resource groups.
> 
> At its most crude, this could be something like:
> 
> struct container {
> #ifdef CONFIG_CPUSETS
>   struct cpuset cs;
> #endif
> #ifdef CONFIG_RES_GROUPS
>   struct resource_group rg;
> #endif
> };

Won't it restrict the user to choose one of these, and not both.

It will also prevent the possibility of having resource groups within a
cpuset.

> 
> but at least it would be sharing some of the abstractions.
> 
> Paul
> 
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-- 

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    Chandra Seetharaman               | Be careful what you choose....
              - sekharan at us.ibm.com   |      .......you may get it.
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