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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 ( 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.


"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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