[lxc-users] lxc memory limit doesn't work

[Fajar A. Nugraha]

Ah, OK.

In that case, on the container, try:
mount | grep lxcfs
cat /proc/cpuinfo
cat /proc/meminfo

IF you have lxcfs correctly installed and used by the containers (as
shown by mount command), cpuinfo and meminfo should contain
container-specific values as set on cgroups (e.g.
lxc.cgroup.cpuset.cpus, lxc.cgroup.memory.limit_in_bytes)

if you DON'T see lxcfs there, check:
- whether lxcfs is running
- whether lxcfs hook is properly setup (e.g. on Ubuntu lxcfs has
/usr/share/lxc/config/common.conf.d/00-lxcfs.conf, and
/usr/share/lxc/config/common.conf includes
/usr/share/lxc/config/common.conf.d/)

-- 
Fajar

On Wed, Apr 29, 2015 at 4:09 PM, Fırat KÜÇÜK <firatkucuk at gmail.com> wrote:
> in fact.
>
> Today i setup lxd and lxc seperately.
>
> on lxd setup i used:
>
> lxc config set my-container limits.memory 4G
>
> and it worked.
>
> But i considered lxd is not quite stable for production. Than i used lxc
> then i created a container and edit conf-file
>
> lxc.cgroup.memory.limit_in_bytes = 2048M
>
> but it doesn't work.
>
> In both cases i used free -h or cat /proc/meminfo
>
>
>
> 2015-04-29 11:09 GMT+03:00 Fajar A. Nugraha <list at fajar.net>:
>>
>> On Wed, Apr 29, 2015 at 2:17 PM, Fırat KÜÇÜK <firatkucuk at gmail.com> wrote:
>> > Hi,
>> >
>> > i updated the config file:
>> > lxc.cgroup.memory.limit_in_bytes = 2048M
>> >
>> > but my container free -h output shows 32GB
>> >
>> > Is there anything that i missed?
>>
>> Not really.
>>
>> In most (all?) lxc setup, various tools (e.g. free, top) on the
>> container will show the host's total resources. You will only see the
>> limit take effect once you run some memory and cpu-intensive programs.
>> lxcfs should help in some situations, but not all.
>>
>> From the host, run:
>>
>> lxc-cgroup -n CONTAINER_NAME memory.limit_in_bytes
>> lxc-cgroup -n CONTAINER_NAME memory.usage_in_bytes
>>
>> The second output should always be lower than the first. Once the
>> container's usage approach the set limit, you'd see OOM-messages on
>> syslog and programs on the container will be automatically killed
>> courtesy of OOM killer.
>>
>> --
>> Fajar
>> _______________________________________________
>> lxc-users mailing list
>> lxc-users at lists.linuxcontainers.org
>> http://lists.linuxcontainers.org/listinfo/lxc-users
>
>
>
>
> --
> FIRAT KÜÇÜK
>
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