Can't make Directory in /sys/fs/cgroup as SU

Jim binarynut at comcast.net
Fri Nov 19 22:38:19 UTC 2010


On 11/19/2010 04:45 PM, Jim wrote:
> On 11/19/2010 04:21 PM, Jim wrote:
>> On 11/19/2010 02:27 PM, Konstantin Svist wrote:
>>> On 11/19/2010 09:02 AM, Jim wrote:
>>>> Fedora 13
>>>>
>>>> Trying to make Directory cpu in /sys/fs/cgroup as SU as per this 
>>>> below Website states
>>>> And it keeps saying,  "No such file or directory"
>>>>
>>>> /sys/fs/cgroup does exist.
>>>>
>>>> # cd /sys/fs/cgroup/
>>>> [root at Bigone cgroup]# ls -al
>>>> total 0
>>>>
>>>> drwxr-xr-x. 2 root root 0 Nov 19 11:26 .
>>>> drwxr-xr-x. 5 root root 0 Nov 14 12:11 ..
>>>>
>>>> |So the command below won't work
>>>>
>>>> mount -t cgroup cgroup /sys/fs/cgroup/cpu -o cpu
>>>> mkdir -m 0777 /sys/fs/cgroup/cpu/user|
>>>>
>>>> http://www.webupd8.org/2010/11/alternative-to-200-lines-kernel-patch.html 
>>>
>>>
>>>
>>> Try this one, instead (mostly from http://lkml.org/lkml/2010/11/16/413)
>>>
>>> add to .bashrc:
>>> if [ "$PS1" ] ; then
>>>          mkdir -m 0700 -p /cgroup/cpu/user/$$
>>>          echo 1>  /cgroup/cpu/user/$$/notify_on_release
>>>          echo $$>  /cgroup/cpu/user/$$/tasks
>>> fi
>>>
>>> create /bin/rmcgroup:
>>> #!/bin/bash
>>> rmdir /cgroup/cpu/$1
>>>
>>> add to /etc/rc.local:
>>> mount -t cgroup -o cpu none /cgroup/cpu
>>> mkdir -p -m 0777 /cgroup/cpu/user
>>> echo "/bin/rmcgroup">  /cgroup/cpu/release_agent
>>>
>> Fedora 14
>>
>> I made these changes as shown above and restarted computer and had no 
>> error messages pop up.
>>
>> Checked /var/log/messages and found no error evolving reading of 
>> rc.local , if it did ?
>
> Well guys I took it for a spin and things seem to be faster.
>
> When opening /usr/lib in Konqueror or Dolphin it is much faster.
>
> Anyone got ideals on checking the speed to see if it is faster ?


I hate to have to tell you guys this , but !!!

My EEEpc playing justintv video is much better, the hesitation is so slight.
Playing the "Transformers", I just can't get over it.

I put this fix on a FC13 PC and My FC14 EEEpc  and I'm impressed.


Again this is the modifications I used:

Try this one, instead (mostly from http://lkml.org/lkml/2010/11/16/413)

add to .bashrc:

if [ "$PS1" ] ; then
         mkdir -m 0700 -p /cgroup/cpu/user/$$
         echo 1>  /cgroup/cpu/user/$$/notify_on_release
         echo $$>  /cgroup/cpu/user/$$/tasks
fi


create /bin/rmcgroup:

#!/bin/bash
rmdir /cgroup/cpu/$1


add to /etc/rc.local:

mount -t cgroup -o cpu none /cgroup/cpu
mkdir -p -m 0777 /cgroup/cpu/user
echo "/bin/rmcgroup">  /cgroup/cpu/release_agent


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