+cpuset returns Permission Denied

Support
1

I am trying to run “echo +cpuset > /sys/fs/cgroup/cgroup.subtree_control” in terminal, but either as the current user, or as root (sudo), I am getting permission denied.

ls -l cgroup.subtree_control                                                     ✔ 
-rw-r--r-- 1 root root 0 Jan  7 07:34 cgroup.subtree_control

Any ideas why or how to fix this?

2

How are you using sudo for this? My guess is (guessing because you didn’t give any information) that you run echo as sudo but the redirect as your normal user.

3

Yes, this is how I do it. So I should run it like this?
echo sudo +cpuset > /sys/fs/cgroup/cgroup.subtree_control
Is this correct?

Edit: Ok, I ran “su” first, and then the command, now it works.
That was easy. Thanks @mithrial

4

This is how I would do it, and it probably makes it a bit more intelligible:

echo "+cpuset" | sudo tee /sys/fs/cgroup/cgroup.subtree_control
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