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

[Felipe Sateler]

On Wed, Nov 12, 2014 at 10:28 AM, Felipe Sateler <fsateler at debian.org> wrote:
> 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.

Ha! It works! The problem seems to be one of units: the rtkit-test
program wrongly set RTTIME to 3 orders of magnitude higher than the
max timeout allowed by rtkit-daemon.

So, I have been on a goose chase all this time :/. On the bright side,
we now know rtkit is not broken under systemd :)

-- 

Saludos,
Felipe Sateler