Re: new cg-manager gui tool for managin cgroups

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On Wed, 20.07.11 16:59, Vivek Goyal (vgoyal@xxxxxxxxxx) wrote:

> 
> On Wed, Jul 20, 2011 at 10:28:32PM +0200, Lennart Poettering wrote:
> 
> [..]
> > systemd is and will always have to maintain its own hierarchy
> > independently of everybody else.
> 
> In the presentation today, you mentioned that you would like to create
> cgroups for users by default in cpu hierarchy (once RT time allocation
> issue is resolved). I am wondering what happens if an admin wants to
> change the policy a bit. Say give higher cpu shares to a specific
> user.

He can just go and do that. systemd assume to be the exclusive owner of
/sys/fs/cgroup/systemd, but the other hierarchies can be manipulated by
others too. That means that if people want to create a hierarchy there,
then they can do that. If people want systemd to stop mucking with the
cpu hierarchy for all users then this can be configured in a simple
config file.

> How is one supposed to do that. As it looks like that part of the
> control lies with systemd (as it is the one creates user group under
> cpu) and part of the control lies with GUItool/cgconfig.

Right now, systemd has few controls to actually make use of
controllers. It assumes that the limits on hte controllers are already
configured by something else.

Lennart

-- 
Lennart Poettering - Red Hat, Inc.
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