[systemd-devel] Limiting resources

[Daniel Poelzleithner]

On 02/22/2011 11:33 AM, Cristian Patrascu wrote:

> 2. If there is such an option, is there a way to read the specified cpu
> limit from the control group hierarchy?

If you put a cpu.share value in the cpu cgroup, all processes in that
group have a weight of that value. read the cgroup docs how the share is
used.

> 4. How can I set limits in the control group specified in a .service file?
>     Ex.:
>     - in the following control group hierarchy:
> "[...]/cgroup/memory/some_subgroup/" there is a file
> "memory.limit_in_bytes" that contains the maximum memory limit of
> processes running in this subgroup. When processes reach that maximum
> amount of memory, they are killed. 

They are not killed, malloc just returns NULL and most programs don't
handle that. :-)
You can also limit the amount on ram seperatly, so a large process must
swap and will not obtain all physical ram.


kind regrads
 Daniel

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