[systemd-devel] Where did DefaultControllers= option go?

Kay Sievers kay at vrfy.org
Tue Oct 29 18:56:57 CET 2013


On Tue, Oct 29, 2013 at 6:45 PM, Umut Tezduyar <umut at tezduyar.com> wrote:

>> The global mirroring across trees makes no sense in the future. The
>> several independent trees will go away in the kernel next year, and
>> then systemd would not know what to do with an instruction like
>> DefaultControllers.
>
> I don't disagree that mirroring will not make sense in the future.
> Though, without global mirroring on cpuacct I don't understand how
> systemd-cgtop is expected to give cpu accounting information of
> individual services. Also without global mirroring on cpu control
> group, how would CPUShares=weight even work on any service. I am just
> confused.

The kernel will only have one single hierarchy, all properties will be
located in this single tree.

Cgtop just reads the stuff from the controller *attributes* there,
instead of finding them in a separate controller *tree*.

Kay


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