Setting cpuset.memory_pressure_enabled in /etc/cgconfig.conf not working in RHEL 6

Issue

• Cannot set cpuset.memory_pressure_enabled = 1 via /etc/cgconfig.conf

  # service cgconfig start
  Starting cgconfig service: Loading configuration file /etc/cgconfig.conf failed
  Cgroup, requested group parameter does not exist
  Failed to parse /etc/cgconfig.conf                         [FAILED]
  

• The cgroups parameter  cpuset.memory_pressure_enabled cannot be set within a group.  It appears to only be applicable at the root of the cpuset controller, but we are unsure of how to set that in cgconfig.conf.