Bug#747568: rtkit-daemon.service:32] Unknown lvalue 'ControlGroup'

[Felipe Sateler]

On Wed, Nov 12, 2014 at 5:19 AM, Fabian Greffrath <fabian at greffrath.com> wrote:
> Am Mittwoch, den 12.11.2014, 01:56 -0300 schrieb Felipe Sateler:
>> It appears that one needs to write to a file
>> <cgroup>/cpu.rt_runtime_us (and all the way up the cgroup tree).
>> However that requires a CONFIG_RT_GROUP_SCHED enabled kernel, which
>> debian doesn't have.
>
> Is this option available in the Vanilla kernel or only in the
> realtime/preempt-patch set?

Our kernel seems to have it, just disabled.

>
>> Not sure how to move on...
>
> Wishlist bug against "linux" source package?

Hmm, I wish I better understood all this. According to [1] that I just
found, without CONFIG_RT_GROUP_SCHED we should not have the rtkit
problem. However the rtkit-test program still reports failure.

Adding a few printfs shows that the rtkit-test failure may be due to
an unlimited RTTIME rlimit. Will investigate this further later.


[1]https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1284731


-- 

Saludos,
Felipe Sateler