Re: vserver and cgroups

Hi,

Thanks for your reply!

What distribution are you on?
Can you show me the output of "cat /proc/mounts |grep cgroup"?

I can't find any obvious reason why it is not working.

On 31/03/14 16:45, Jean Weisbuch wrote:
> Hi,
>
> I havent tried a 3.13 kernel yet but these informaitons are applicable 
> to 3.10 kernels (and olders too).
>
> With the util-vserver supplied on the BenG repository you dont need to 
> manually mount the cgroups, memory limit support should be loaded 
> automatically.
>
> As for modifying limits on /etc/vservers/<guest>/cgroup/memory, the 
> limits will only be used at the VServer start, not if the VServer is 
> already running.
> You can change the live value on : /dev/cgroup/<guest>/memory.* (wont 
> be kept at reboot).
>
> I am not sure that putting an "*G" argument will work, i personally 
> use integer values such as :
>     VSERVERNAME=thevservername MEMLIMITGB=4
>
>     [[ ! -d "/etc/vservers/${VSERVERNAME}/cgroup" ]] && mkdir 
> /etc/vservers/${VSERVERNAME}/cgroup
>     echo $((${MEMLIMITGB}*1024*1024*1024)) > 
> /etc/vservers/${VSERVERNAME}/cgroup/memory.limit_in_bytes
>     echo $((${MEMLIMITGB}*1024*1024*1024)) > 
> /etc/vservers/${VSERVERNAME}/cgroup/memory.memsw.limit_in_bytes
>     perl -i -pe 's/^#(virt_mem)/\1/' /etc/vservers/${VSERVERNAME}/cflags
>     echo $((${MEMLIMITGB}*1024*1024*1024)) > 
> /dev/cgroup/${VSERVERNAME}/memory.limit_in_bytes
>     echo $((${MEMLIMITGB}*1024*1024*1024)) > 
> /dev/cgroup/${VSERVERNAME}/memory.memsw.limit_in_bytes
>
>
> On 31/03/2014 16:37, Tomasz Pajor wrote:
>> Hi,
>>
>> I have problem with setting up memory limit on a vserver.
>> I'm using 3.13.6-vs2.3.6.11-beng from repo.psand.net.
>>
>> Steps
>> - added "cgroup_enable=memory swapaccount=1" to GRUB_CMDLINE_LINUX
>> - added "none /dev/cgroup cgroup cpu,cpuset,memory 0 0" to /etc/fstab
>> - added "INFO_INIT,VIRT_MEM,VIRT_UPTIME,VIRT_LOAD,REBOOT_KILL" to cflags
>> of the guest
>> - mkdir /etc/vservers/.defaults/cgroup
>> - mkdir /etc/vservers/<guest>/cgroup
>> - echo "4G" > /etc/vservers/<guest>/cgroup/memory.limit_in_bytes
>> - echo "8G" > /etc/vservers/<guest>/cgroup/memory.memsw.limit_in_bytes
>>
>> When I enter the guest, limits are not applied, also when I run
>> vserver-stat I got "open(memory.stat): No such file or directory".
>>
>> Can anyone point out what am I doing wrong?


-- 
Best regards
Tomasz Pajor