Hi Mike,
On 11/23/2016 04:33 PM, Mike Galbraith wrote:
> On Wed, 2016-11-23 at 14:54 +0100, Michael Kerrisk (man-pages) wrote:
>> Hi Mike,
[...]
>> Actually, can you define for me what the root task group is, and
>> why it exists? That may be worth some words in this man page.
>
> I don't think we need group scheduling details, there's plenty of
> documentation elsewhere for those who want theory. Autogroup is for
> those who don't want to have to care (which is also why it should have
> never grown nice knob).
Actually, the more I think about this, the more I think we *do*
need a few details on group scheduling. Otherwise, it's difficult
to explain to the use why nice(1) no longer works as traditionally
expected.
Here's my attempt to define the root task group:
* If autogrouping is disabled, then all processes in the root CPU
cgroup form a scheduling group (sometimes called the "root task
group").
Can you improve on this?
Cheers,
Michael
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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