cgroups: cannot write on file memory.oom_control

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Hi everyone,

I am working with cgroups on OpenSuse (over VirtualBox) and I cannot disable the OOM killer by writing to the file memory.oom_control:

> echo 1 > memory.oom_control
> -bash: echo: write error: Invalid argument

I can change the memory limit and several other settings by writing to the appropriate files (like memory.limit_in_bytes) but I could never write to file memory.oom_control although I am root.

I saw someone posted a similar issue a few days ago but there was no reply...

I have copied below the sequence of command I am using. Any idea what could be the issue ?

Thanks in advance for your help!

Hedi


----

/sys/fs> su - root

/sys/fs> cd cgroup

/sys/fs/cgroup> cgcreate -g memory:/mygroup

/sys/fs/cgroup> cd memory/mygroup

/sys/fs/cgroup/memory/mygroup> echo 32M > memory.limit_in_bytes

/sys/fs/cgroup/memory/mygroup> cat memory.limit_in_bytes
33554432

/sys/fs/cgroup/memory/mygroup> echo 1 > memory.oom_control
-bash: echo: write error: Invalid argument

/sys/fs/cgroup/memory/mygroup> cat memory.oom_control
oom_kill_disable 0
under_oom 0

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