From: Nicky Chorley <ndchorley@gmail.com>
To: kernelnewbies@kernelnewbies.org
Subject: Misunderstanding documentation on enabling cgroup controllers
Date: Fri, 19 Aug 2022 09:24:53 +0100 [thread overview]
Message-ID: <CAG-xSoaRPRUf1m79hLrUZJCzWU+-hO=-FucVJxYeLgF0Hgytkg@mail.gmail.com> (raw)
Hi folks,
The documentation for enabling and disabling cgroup controllers at
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/cgroup-v2.rst#n403
says that no controllers are enabled by default and to enable them,
one needs to write into cgroup.subtree_control.
I thought this meant that if I didn't enable a controller, I couldn't
control those resources. However, I wrote a program to limit the
number of processes in a cgroup and it works as expected - if I try to
create more processes, I'm unable to. I didn't write "+pids" into
cgroup.subtree_control - that file remains empty.
Am I misunderstanding the documentation, then?
Thanks.
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next reply other threads:[~2022-08-19 8:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-19 8:24 Nicky Chorley [this message]
2022-08-21 18:14 ` Misunderstanding documentation on enabling cgroup controllers Valentin Vidić
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