Also an interesting datapoint is that on Ubuntu 21.04 Server on my pi, the memory cgroup is enabled:
ubuntu@ubuntu:~$ cat /proc/cgroups #subsys_name hierarchy num_cgroups enabled cpuset 7 1 1 cpu 2 125 1 cpuacct 2 125 1 blkio 11 125 1 memory 5 140 1 devices 12 126 1 freezer 8 4 1 net_cls 9 1 1 perf_event 6 1 1 net_prio 9 1 1 hugetlb 3 1 1 pids 10 132 1 rdma 4 1 1 ubuntu@ubuntu:~$ uname -a Linux ubuntu 5.11.0-1017-raspi #18-Ubuntu SMP PREEMPT Mon Aug 23 07:34:31 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1945369 Title: memory cgroup disabled on Ubuntu Core 18 Status in linux package in Ubuntu: New Bug description: On Ubuntu Core 18, the memory cgroup is disabled, it seems that it needs to be manually enabled. I was able to enable it by adding `cgroup_enable=memory cgroup_memory=1` to the kernel command line, but on Ubuntu I think the memory cgroup should be enabled by default shouldn't it? $ cat /proc/cgroups #subsys_name hierarchy num_cgroups enabled cpuset 2 1 1 cpu 4 100 1 cpuacct 4 100 1 blkio 5 100 1 memory 0 109 0 devices 6 100 1 freezer 9 4 1 net_cls 3 1 1 perf_event 10 1 1 net_prio 3 1 1 pids 8 107 1 rdma 7 1 1 I see this with Linux localhost 5.4.0-1043-raspi #47~18.04.1-Ubuntu SMP PREEMPT Mon Aug 23 14:39:46 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux on Ubuntu Core 18, but folks have informed me that the same is true on Ubuntu Core 20 as well. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1945369/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
