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    SubjectRe: [RFD] cgroup: about multiple hierarchies
    On Thu, 01.03.12 23:04, Mike Galbraith (efault@gmx.de) wrote:

    >
    > On Thu, 2012-03-01 at 16:02 -0500, Vivek Goyal wrote:
    > > On Thu, Mar 01, 2012 at 09:26:43PM +0100, Mike Galbraith wrote:
    >
    > > > Q: you say systemd requires CONFIG_CGROUPS=y. Why is that? It's taking
    > > > over sysvinits job afaiui, what does that have to do with cgroups?
    > >
    > > I think they were using it to track all the children forked by a service
    > > and cleanup all of them if need be. So they just need it for logical
    > > grouping functionality and don't require any controllers as such.
    >
    > Hm. Controllers are perhaps not required, but cpu controller was
    > configured and used without consent. I didn't receive an offer.

    Just set DefaultControllers= in /etc/systemd/system.conf to an empty
    string and systemd will not make use of any hierarchy beyond its private
    name=systemd named hierarchy.

    Lennart

    --
    Lennart Poettering - Red Hat, Inc.


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