Re: [Astlinux-users] LXC Containers

[Michael K. <li...@mk...>]

> Am 24.05.2020 um 23:38 schrieb Michael Keuter <li...@mk...>:
> 
> 
> 
>> Am 24.05.2020 um 23:24 schrieb Lonnie Abelbeck <li...@lo...>:
>> 
>> 
>> 
>>> On May 24, 2020, at 3:49 PM, Michael Keuter <li...@mk...> wrote:
>>> 
>>> Try running the "yes" stresstest in the container, with the above limitations.
>> 
>> If I define lxc.cgroup.cpuset.cpus to 1, or 2 or 3, the "yes" stress-test [1] only uses one core.
>> 
>> Setting lxc.cgroup.cpuset.cpus=4 the container does not start.
>> 
>> Not setting lxc.cgroup.cpuset.cpus all 4 cores are used.
>> 
>> Lonnie
>> 
>> [1]
>> (start test)
>> # for x in 1 2 3 4; do ( yes >/dev/null & ); done
>> 
>> (stop test)
>> # killall yes
> 
> ----
> From the man page:
> 
> lxc-cgroup -n foo cpuset.cpus "0,3"
> assign the processors 0 and 3 to the container.
> ----
> 
> I guess you define which CPU cores are allowed to use (0-3), that's why 4 does not work :-).
> 
> lxc.cgroup.cpuset.cpus=0,3  (maybe in quotes, should use core 1 and 4)

Yup, this uses CPU 2 + 4 (core 0 + 3), you define the actual cores NOT the count!

lxc.cgroup.cpuset.cpus = 1,3

Michael

http://www.mksolutions.info