Hope had been that the kernel's new support for cpuset.effective_cpus
would fix this. Removing a cpu from a parent cgroup or offlining a cpu
would remove it from effective_cpus, but not from cpuset.cpus.
Apparently that's not the case (kernel 3.19.0-10-generic was used for
the test in comment #27)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: New => Confirmed
** Changed in: cgmanager (Ubuntu)
Status: Fix Released => Confirmed
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https://bugs.launchpad.net/bugs/1392176
Title:
mounts cgroups unconditionally which causes undesired effects with cpu
hotplug
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