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    SubjectRe: [RFC/RFT PATCH v3] sched: automated per tty task groups
    On 11/17/2010 05:52 PM, Peter Zijlstra wrote:
    > On Wed, 2010-11-17 at 23:45 +0100, Lennart Poettering wrote:
    >
    >> On Wed, 17.11.10 23:37, Peter Zijlstra (a.p.zijlstra@chello.nl) wrote:
    >>
    >>
    >>> On Wed, 2010-11-17 at 23:34 +0100, Lennart Poettering wrote:
    >>>
    >>>> This should fix things for people with systemd and GNOME. Yes, all
    >>>> others are left in the cold. Sorry for that.
    >>>>
    >>> Is there an easy opt out for that, other than booting a CONFIG_CGROUP=n
    >>> kernel?
    >>>
    >> systemd relies on CONFIG_CGROUP=y, since it useses it for service
    >> management. It creates its own name=systemd hierarchy for that with no
    >> controllers attached. If you turn that off, then systemd will refuse to
    >> boot.
    >>
    > Do expect distro bugzilla entries when this 'awesome'-ness hits the
    > street.
    >
    >
    >> However, it does not rely on any of the controllers, and hence you
    >> are welcome to disable all cgroup controlls and systemd won't complain.
    >>
    >> If you want to disable the automatic creation of groups in the 'cpu'
    >> hierarchy for user sessions then you can tell pam_systemd that by passing
    >> "controllers=" on the PAM config line. ("controllers=cpu" is the implied
    >> default.)
    >>
    >> There's currently no global option to disable the same logic in systemd
    >> when it creates 'cpu' cgroups for the various services it runs. However,
    >> you can disable that individually with "ControlGroups=cpu:/" in the
    >> .service files. I will now add a global option as well.
    >>
    > A global knob is a must -- preferably with neon signs on so I can find
    > it. Luckily I don't use this GNOME junk, otherwise I'd have had to ask
    > how to revert that crap as well.
    >
    >
    >
    Amen!!



    --

    "They that give up essential liberty to obtain temporary safety,
    deserve neither liberty nor safety." (Ben Franklin)

    "The course of history shows that as a government grows, liberty
    decreases." (Thomas Jefferson)





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