On Mon, Feb 27, 2012 at 4:12 PM, julius <[email protected]> wrote:
> Am 23.02.2012 19:37, schrieb julius:
>> Am 21.02.2012 09:05, schrieb Jan Safranek:
>>> On 02/18/2012 12:02 PM, [email protected] wrote:
>>>> hi,
>>>>
>>>> playing around with cgroups on ubuntu 11.10 i ran into the error:
>>>>
>>>> Cgroup change for PID: 14674, UID: 1000, GID: 1000, PROCNAME:
>>>> /usr/bin/rar FAILED! (Error Code: 50002)
>>>>
>>>>
>>>> on the mailing list archives theres a message that says that 50002 is a
>>>> permission problem with the tasks file, but my current running user can
>>>> write to it and cgrulesengd is running as root.
>>>>
>>>> i tried to keep the config as minimal as possible but still its not
>>>> working. i was expecting the process rar on the second core, but
>>>> checking with htop its allowed to use both cores.
>>>>
>>>>
>>>> any ideas whats wrong?
>>>>
>>>>
>>>> /etc/cgconfig
>>>>
>>>> mount {
>>>> cpu = /sys/fs/cgroup/cpu;
>>>> cpuset = /sys/fs/cgroup/cpuset;
>>>> cpuacct = /sys/fs/cgroup/cpuacct;
>>>> devices = /sys/fs/cgroup/devices;
>>>> memory = /sys/fs/cgroup/memory;
>>>> freezer = /sys/fs/cgroup/freezer;
>>>> }
>>>>
>>>>
>>>> group rar {
>>>> perm {
>>>> task {
>>>> uid = dmkcrew;
>>>> gid = dmkcrew;
>>>> }
>>>> admin {
>>>> uid = dmkcrew;
>>>> gid = dmkcrew;
>>>> }
>>>> }
>>>> cpuset {
>>>> cpuset.cpus = 1;
>>> You should probably set also cpuset.mems. You cannot place anything in a
>>> cpuset cgroup unless it has both cpuset.mems and cpuset.cpus filled.
>>>
>>> Jan
>>>
>>
>> ok, did that.
>> sudo /etc/init.d/cgred stop
>> sudo /etc/init.d/cgconfig restart
>> cat /sys/fs/cgroup/cpuset/rar/cpuset.mems
>> 0
>> cat /sys/fs/cgroup/cpuset/rar/cpuset.cpus
>> 1
>>
>>
>> still the same 50002 error
>>
>>
>
>
> i tried this again on a different system, it worked.
>
> this is the config if somebody finds this posting:
> /etc/cgconfig
> group lowprio {
> perm {
> task {
> uid = root;
> gid = root;
> }
> admin {
> uid = YOURUSER;
> gid = YOURUSER;
> }
> }
> cpuset {
> cpuset.cpus = 1;
> cpuset.mems = 0;
> cpuset.cpu_exclusive = 1;
Shouldn't be needed. This makes the use of that cpu exclusive to just
that cpuset.
> }
> }
>
>
> mount {
> cpu = /sys/fs/cgroup/cpu;
> cpuset = /sys/fs/cgroup/cpuset;
> cpuacct = /sys/fs/cgroup/cpuacct;
> devices = /sys/fs/cgroup/devices;
> memory = /sys/fs/cgroup/memory;
> freezer = /sys/fs/cgroup/freezer;
> blkio = /sys/fs/cgroup/blkio;
> }
>
>
>
> /etc/cgrules
> YOURUSER:dd cpuset lowprio/
>
> start two or more dd processes like this:
> dd if=/dev/zero of=/dev/null bs=1024k
>
> they are not limited by the harddrive speed only by your processor.
> dont forget to change YOURUSER to your username.
>
>
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