In my kernel, there is CONFIG_SCHED_AUTOGROUP=y set. I believe that since
systemd is capable of, and is doing grouping on its own, the kernel option has
no effect. This seems reflected in /sys/fs/cgroups/cpu,cpuacct having
no subdirectories:
12:34 ares40:../cgroup/cpu,cpuacct > ls -Fax
./ ../ cgroup.clone_children cgroup.procs
cgroup.sane_behavior cpu.cfs_period_us cpu.cfs_quota_us cpu.rt_period_us
cpu.rt_runtime_us cpu.shares cpu.stat cpuacct.stat
cpuacct.usage cpuacct.usage_percpu notify_on_release release_agent
tasks
As a result of this, all processes get equal shares, rather than all
SID groups getting equal shares, causing BOINC to outmonopolize VirtualBox:
/$ systemd-cgls
├─1 /usr/lib/systemd/systemd --switched-root --system --deserialize 20
[...]
└─user.slice
└─user-25121.slice
├─session-3.scope
│ ├─ 376 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─ 2200 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─ 2578 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─ 2826 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─ 3162 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─ 3697 SCREEN
│ ├─ 3698 -/bin/bash
│ ├─ 6070 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─ 6554 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
│ ├─14171 /usr/lib/virtualbox/VBoxXPCOMIPCD
│ ├─14176 /usr/lib/virtualbox/VBoxSVC --auto-shutdown
│ ├─14255 /usr/lib/virtualbox/VBoxNetDHCP --ip-address 192.168.100.100 --...
│ ├─25859 boinc
│ └─30167 ../../projects/boinc.fzk.de_poem/poempp_2.21_x86_64-pc-linux-gn...
How would one re-enable the SID-style cpuacct grouping with systemd?
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