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Re: [ckrm-tech] [RFC] Resource Management - Infrastructure choices [message #7926 is a reply to message #7908] Mon, 30 October 2006 18:01 Go to previous messageGo to previous message
Paul Menage is currently offline  Paul Menage
Messages: 642
Registered: September 2006
Senior Member
On 10/30/06, Pavel Emelianov <xemul@openvz.org> wrote:
> > Debated:
> > - syscall vs configfs interface
>
> 1. One of the major configfs ideas is that lifetime of
> the objects is completely driven by userspace.
> Resource controller shouldn't live as long as user
> want. It "may", but not "must"! As you have seen from
> our (beancounters) patches beancounters disapeared
> as soon as the last reference was dropped.

Why is this an important feature for beancounters? All the other
resource control approaches seem to prefer having userspace handle
removing empty/dead groups/containers.

> 2. Having configfs as the only interface doesn't alow
> people having resource controll facility w/o configfs.
> Resource controller must not depend on any "feature".

Why is depending on a feature like configfs worse than depending on a
feature of being able to extend the system call interface?

> > - Interaction of resource controllers, containers and cpusets
> > - Should we support, for instance, creation of resource
> > groups/containers under a cpuset?
> > - Should we have different groupings for different resources?
>
> This breaks the idea of groups isolation.

That's fine - some people don't want total isolation. If we're looking
for a solution that fits all the different requirements, then we need
that flexibility. I agree that the default would probably want to be
that the groupings be the same for all resource controllers /
subsystems.

Paul

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